Mga Asignatura

SchoolGPT

Careers

Buksan ang App

Mga Asignatura

666

Dis 7, 2025

15 mga pahina

Understanding Physics: Motion, Energy, and More!

A

ali

@aliyahche_1avlt

Physics covers the fundamental laws that govern how objects move... Ipakita pa

Page 1
Page 2
Page 3
Page 4
Page 5
Page 6
Page 7
Page 8
Page 9
Page 10
Page 11
Page 12
Page 13
Page 14
Page 15
1 / 15
Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Newton's Laws of Motion

Ever wonder why you lurch forward when a jeepney suddenly stops? That's Newton's First Law (Law of Inertia) in action! When the sum of forces equals zero ΣF=0ΣF = 0, objects at rest stay at rest, and moving objects keep moving in a straight line.

Friction plays a huge role here. Static friction keeps your phone from sliding off your desk, while kinetic friction slows down that basketball you just rolled across the court. The friction force formula is fs = Fn × Ms, where Ms is the coefficient of static friction.

Newton's Second Law of Acceleration gives us the famous equation F = ma. This means acceleration is directly proportional to the net force applied. The bigger the force, the greater the acceleration - but heavier objects need more force to accelerate at the same rate.

Quick Tip: Always convert mass to kilograms when solving physics problems to avoid calculation errors!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

More Newton's Laws and Problem Solving

Newton's Third Law of Interaction states that for every action, there's an equal and opposite reaction FA=FBFA = FB. When you walk, you push against the ground, and the ground pushes back with equal force - that's what propels you forward!

Problem-solving in physics follows a clear pattern: Given (what you know), Required (what you need to find), Equation (the formula to use), Solution (the math), and Answer (with proper units and direction).

For acceleration problems, use a = F/m. When objects are in contact (like two boxes being pushed together), treat them as one system by adding their masses together. The same acceleration applies to both objects since they're moving together.

Remember: Negative answers in physics often indicate direction - like friction force acting opposite to motion!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Work: When Force Meets Motion

Work only happens when an object moves in the direction of the applied force. The formula is W = Fd cos θ, where θ is the angle between force and displacement.

There are three key cases to remember. Positive work occurs when force and motion are in the same direction (θ = 0°), like pushing a cart forward. Negative work happens when force opposes motion (θ = 180°), such as friction slowing down a sliding box.

Zero work occurs when force is perpendicular to motion (θ = 90°). A perfect example is carrying your backpack while walking horizontally - you're applying upward force, but moving sideways, so no work is done against gravity.

Real-world connection: When you lift something straight up, you're doing positive work against gravity. When gravity pulls it back down, gravity does positive work while you do negative work!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Power: Work Done Over Time

Power measures how quickly work gets done, using the formula P = W/t. It can also be expressed as P = Fv cos θ when you know force and velocity.

When solving power problems, always identify whether you're dealing with positive or negative work first. For lifting problems, use θ = 0° since force and displacement are in the same direction (both upward).

The key insight is that power tells us the rate of energy transfer. A crane that lifts 1000 N over 5 meters in 100 seconds has less power than one that does the same work in 50 seconds.

Think about it: A motorcycle and a truck might both climb the same hill (same work), but the motorcycle does it faster, so it has higher power output per unit mass!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Energy: The Capacity to Do Work

Mechanical energy comes in two forms: kinetic energy K=½mv2K = ½mv² for moving objects and potential energy U=mghU = mgh for objects with stored energy due to position.

The Law of Conservation of Mechanical Energy is incredibly powerful - total mechanical energy stays constant: ME = K + U = constant. As a ball falls, potential energy converts to kinetic energy, but the total remains the same.

The work-energy theorem connects work and kinetic energy: W = ΔK = KEf - KEi. This means the work done on an object equals its change in kinetic energy, giving us another way to solve motion problems.

Energy insight: A 1 kg object moving at 6 m/s has the same kinetic energy as a 4 kg object moving at 3 m/s. Speed matters more than mass for kinetic energy!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Energy Applications and Problem Solving

When comparing kinetic energies, remember that velocity is squared in the formula K = ½mv². This means doubling speed quadruples the kinetic energy - which is why car crashes at higher speeds are so much more dangerous.

For potential energy problems, always define your reference point (usually ground level). The height in U = mgh is measured from this reference point.

Conservation of energy problems become straightforward when you remember that energy at point A equals energy at point B: MEA = MEB. Set up your equation as KE+PEKE + PEinitial = KE+PEKE + PEfinal and solve for the unknown.

Pro tip: When an object is released from rest at height h, its speed when it hits the ground is always v = √(2gh), regardless of the path it takes!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Physics Foundations and Measurement

Physics is the natural science that uses experiments, measurements, and math to understand how our universe works. Everything from your smartphone to space rockets operates on physics principles.

The International System (SI) uses standard units: kilograms for mass, meters for length, and seconds for time. This replaced the old system where people used body parts as measurements (which varied from person to person!).

Unit conversion is crucial in physics. Use conversion factors like building blocks: convert inches to feet (÷12), then feet to miles (÷5280). For metric conversions, remember the prefixes: kilo (1000), centi (1/100), milli (1/1000).

Conversion hack: When moving decimal places in metric conversions, count the steps between prefixes. From hectometers to micrometers? That's 8 places to the right!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Vectors vs Scalars

Vectors have both magnitude (size) and direction, like velocity and force. Scalars only have magnitude, like temperature and mass. This distinction is crucial for understanding motion and forces.

Vector representation can be done three ways: using vector notation (A⃗), drawing rays with length proportional to magnitude, or using coordinates (x,y). The arrow's length shows magnitude, while its direction shows the vector's direction.

Displacement vs distance perfectly illustrates the vector-scalar difference. If you walk 25m to the cafeteria and back, your distance is 50m (scalar), but your displacement is 0m (vector) since you ended where you started.

Direction convention: Positive directions are typically North, East, forward, upward, and rightward. Negative directions are South, West, backward, downward, and leftward.

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Vector Components and Angles

Breaking vectors into x and y components uses trigonometry: cos θ for x-components, sin θ for y-components. This makes complex vector problems much easier to solve.

Standard position angles are measured counterclockwise from the positive x-axis (East). To convert from compass bearings to standard position, you often need to add or subtract from 90°, 180°, 270°, or 360°.

When given a vector like "5m, 30° West of North," first convert to standard position (120°), then find components: Ax = 5 cos(120°) = -2.5, Ay = 5 sin(120°) = 4.33.

Angle conversion trick: "West of North" means start from North (90°) and rotate toward West. "North of West" means start from West (180°) and rotate toward North.

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Converting Coordinates to Vector Form

To find magnitude and direction from coordinates (x,y), use the Pythagorean theorem for magnitude: |A| = √x2+y2x² + y². Then use inverse tangent to find the angle: θ = tan⁻¹y/xy/x.

Always use absolute values when calculating magnitude - it's always positive! For the angle, pay attention to which quadrant your vector is in to determine the correct bearing.

When expressing your final answer, choose the most natural bearing format. A vector in quadrant II could be expressed as "N of W" or "W of N" - both are correct, but one might be more conventional depending on the context.

Bearing tip: The angle you calculate with tan⁻¹ gives you one reference angle. Use the quadrant to determine the correct bearing format - practice makes perfect!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st
Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st
Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st
Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st
Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st


Akala namin hindi mo na itatanong...

Ano ang Knowunity AI companion?

Ang aming AI Companion ay isang AI tool na nakatuon sa mga estudyante na nag-aalok ng higit pa sa mga sagot lang. Binuo mula sa milyong Knowunity resources, nagbibigay ito ng may-kaugnayang impormasyon, personalized na study plans, quizzes, at content direkta sa chat, na umaangkop sa iyong sariling learning journey.

Saan ko mada-download ang Knowunity app?

Maaari mong i-download ang app mula sa Google Play Store at Apple App Store.

Talaga bang libre ang Knowunity?

Tama 'yan! Mag-enjoy sa libreng access sa mga study content, makipag-connect sa kapwa mga estudyante, at kumuha ng instant na tulong – lahat nasa iyong daliri lang.

Hindi mo mahanap ang hinahanap mo? Tuklasin ang iba pang mga asignatura.

Gustong-gusto kami ng mga estudyante — at magiging ganoon ka rin.

4.9/5

App Store

4.8/5

Google Play

Napakadaling gamitin at maganda ang disenyo ng app. Nahanap ko lahat ng hinahanap ko hanggang ngayon at natuto ako ng marami mula sa mga presentasyon! Tiyak na gagamitin ko ang app para sa isang takdang-aralin sa klase! At siyempre, nakakatulong din ito bilang inspirasyon.

Stefan S

gumagamit ng iOS

Sobrang ganda talaga ng app na ito. Maraming mga study notes at tulong [...]. Ang problemang subject ko ay Pranses, halimbawa, at ang app ay may maraming options para tumulong. Salamat sa app na ito, bumuti ang Pranses ko. Irerekumenda ko ito sa lahat.

Samantha Klich

Android user

Wow, talagang namangha ako. Sinubukan ko lang ang app dahil nakita ko itong ina-advertise nang maraming beses at sobrang nagulat ako. Ang app na ito ang TULONG na gusto mo para sa paaralan at higit sa lahat, nag-aalok ito ng maraming bagay, tulad ng workouts at fact sheets, na SOBRANG nakatulong sa akin.

Anna

iOS user

Pinakamagandang app sa mundo! walang masabi dahil sobrang ganda nito

Thomas R

iOS user

Napakaganda talaga. Nakakapag-review ako ng 10x mas mabuti, itong app ay mabilis na 10/10. Lubos kong inirerekomenda ito sa lahat. Pwede akong manood at maghanap ng notes. Pwede kong i-save ang mga ito sa subject folder. Pwede kong i-review anumang oras kapag bumalik ako. Kung hindi mo pa nasubukan ang app na ito, marami kang nawawala.

Basil

Android user

Ang app na ito ay nagpapalakas ng loob ko sa paghahanda sa exams, hindi lang dahil sa pagpapataas ng aking kumpiyansa sa sarili sa pamamagitan ng mga feature na nagpapahintulot sa iyo na makipag-connect sa iba at mabawasan ang pakiramdam na nag-iisa, kundi pati na rin sa paraan na nakatuon ang app sa pagpapagaan ng iyong pakiramdam. Madali itong i-navigate, masaya gamitin, at nakakatulong sa sinumang nahihirapan sa kahit anong paraan.

David K

iOS user

Sobrang galing ng app! Ilalagay ko lang ang paksa sa search bar at makakakuha na ako ng sagot kaagad. Hindi ko kailangang manood ng 10 YouTube videos para maintindihan ang isang bagay, kaya nakakatipid ako ng oras. Lubos na inirerekomenda!

Sudenaz Ocak

Android user

Sa paaralan, napakahina ko sa math pero salamat sa app, mas mahusay na ako ngayon. Lubos akong nagpapasalamat na ginawa niyo ang app na ito.

Greenlight Bonnie

Android user

napakareliable na app para tumulong at palawakin ang iyong mga ideya sa Math, English at iba pang mga related na paksa sa iyong mga gawain. gamitin mo ang app na ito kung nahihirapan ka sa mga area, susi ito para diyan. sana nag-review na ako dati. at libre rin ito kaya huwag mag-alala tungkol diyan.

Rohan U

Android user

Alam kong maraming apps gumagamit ng fake accounts para mapataas ang kanilang reviews pero ang app na ito ay deserve lahat ng papuri. Dati nakakakuha ako ng 4 sa aking English exams at ngayon nakakuha ako ng grade 7. Hindi ko pa alam ang app na ito tatlong araw bago ang exam at nakatulong ito ng SOBRA. Pakisuyong maniwala sa akin at gamitin ito dahil sigurado akong makikita mo rin ang mga pagbabago.

Xander S

iOS user

SOBRANG KAPAKI-PAKINABANG NG MGA QUIZZES AT FLASHCARDS AT SOBRANG GUSTO KO ANG SCHOOLGPT. PARANG CHATGPT DIN PERO MAS MATALINO!! TINULUNGAN DIN AKO SA AKING MASCARA PROBLEMS!! PATI NA RIN SA AKING TUNAY NA MGA SUBJECTS! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

Grabe talaga ang app na to. Sobrang nakakaboring sakin ang pagreview pero ginagawa ng app na to na sobrang dali mag-organize ng lahat at pwede mong tanungin ang libreng ai para subukin ang sarili mo kaya sobrang buti at madali mong ma-upload ang sarili mong mga bagay. highly recommend bilang isang taong nagte-take ng mocks ngayon

Paul T

iOS user

Napakadaling gamitin at maganda ang disenyo ng app. Nahanap ko lahat ng hinahanap ko hanggang ngayon at natuto ako ng marami mula sa mga presentasyon! Tiyak na gagamitin ko ang app para sa isang takdang-aralin sa klase! At siyempre, nakakatulong din ito bilang inspirasyon.

Stefan S

gumagamit ng iOS

Sobrang ganda talaga ng app na ito. Maraming mga study notes at tulong [...]. Ang problemang subject ko ay Pranses, halimbawa, at ang app ay may maraming options para tumulong. Salamat sa app na ito, bumuti ang Pranses ko. Irerekumenda ko ito sa lahat.

Samantha Klich

Android user

Wow, talagang namangha ako. Sinubukan ko lang ang app dahil nakita ko itong ina-advertise nang maraming beses at sobrang nagulat ako. Ang app na ito ang TULONG na gusto mo para sa paaralan at higit sa lahat, nag-aalok ito ng maraming bagay, tulad ng workouts at fact sheets, na SOBRANG nakatulong sa akin.

Anna

iOS user

Pinakamagandang app sa mundo! walang masabi dahil sobrang ganda nito

Thomas R

iOS user

Napakaganda talaga. Nakakapag-review ako ng 10x mas mabuti, itong app ay mabilis na 10/10. Lubos kong inirerekomenda ito sa lahat. Pwede akong manood at maghanap ng notes. Pwede kong i-save ang mga ito sa subject folder. Pwede kong i-review anumang oras kapag bumalik ako. Kung hindi mo pa nasubukan ang app na ito, marami kang nawawala.

Basil

Android user

Ang app na ito ay nagpapalakas ng loob ko sa paghahanda sa exams, hindi lang dahil sa pagpapataas ng aking kumpiyansa sa sarili sa pamamagitan ng mga feature na nagpapahintulot sa iyo na makipag-connect sa iba at mabawasan ang pakiramdam na nag-iisa, kundi pati na rin sa paraan na nakatuon ang app sa pagpapagaan ng iyong pakiramdam. Madali itong i-navigate, masaya gamitin, at nakakatulong sa sinumang nahihirapan sa kahit anong paraan.

David K

iOS user

Sobrang galing ng app! Ilalagay ko lang ang paksa sa search bar at makakakuha na ako ng sagot kaagad. Hindi ko kailangang manood ng 10 YouTube videos para maintindihan ang isang bagay, kaya nakakatipid ako ng oras. Lubos na inirerekomenda!

Sudenaz Ocak

Android user

Sa paaralan, napakahina ko sa math pero salamat sa app, mas mahusay na ako ngayon. Lubos akong nagpapasalamat na ginawa niyo ang app na ito.

Greenlight Bonnie

Android user

napakareliable na app para tumulong at palawakin ang iyong mga ideya sa Math, English at iba pang mga related na paksa sa iyong mga gawain. gamitin mo ang app na ito kung nahihirapan ka sa mga area, susi ito para diyan. sana nag-review na ako dati. at libre rin ito kaya huwag mag-alala tungkol diyan.

Rohan U

Android user

Alam kong maraming apps gumagamit ng fake accounts para mapataas ang kanilang reviews pero ang app na ito ay deserve lahat ng papuri. Dati nakakakuha ako ng 4 sa aking English exams at ngayon nakakuha ako ng grade 7. Hindi ko pa alam ang app na ito tatlong araw bago ang exam at nakatulong ito ng SOBRA. Pakisuyong maniwala sa akin at gamitin ito dahil sigurado akong makikita mo rin ang mga pagbabago.

Xander S

iOS user

SOBRANG KAPAKI-PAKINABANG NG MGA QUIZZES AT FLASHCARDS AT SOBRANG GUSTO KO ANG SCHOOLGPT. PARANG CHATGPT DIN PERO MAS MATALINO!! TINULUNGAN DIN AKO SA AKING MASCARA PROBLEMS!! PATI NA RIN SA AKING TUNAY NA MGA SUBJECTS! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

Grabe talaga ang app na to. Sobrang nakakaboring sakin ang pagreview pero ginagawa ng app na to na sobrang dali mag-organize ng lahat at pwede mong tanungin ang libreng ai para subukin ang sarili mo kaya sobrang buti at madali mong ma-upload ang sarili mong mga bagay. highly recommend bilang isang taong nagte-take ng mocks ngayon

Paul T

iOS user

 

Gen Physics

666

Dis 7, 2025

15 mga pahina

Understanding Physics: Motion, Energy, and More!

A

ali

@aliyahche_1avlt

Physics covers the fundamental laws that govern how objects move and interact in our world. From Newton's three laws of motion to concepts of work, energy, and vectors, these principles explain everything from why you need to wear a seatbelt... Ipakita pa

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Newton's Laws of Motion

Ever wonder why you lurch forward when a jeepney suddenly stops? That's Newton's First Law (Law of Inertia) in action! When the sum of forces equals zero ΣF=0ΣF = 0, objects at rest stay at rest, and moving objects keep moving in a straight line.

Friction plays a huge role here. Static friction keeps your phone from sliding off your desk, while kinetic friction slows down that basketball you just rolled across the court. The friction force formula is fs = Fn × Ms, where Ms is the coefficient of static friction.

Newton's Second Law of Acceleration gives us the famous equation F = ma. This means acceleration is directly proportional to the net force applied. The bigger the force, the greater the acceleration - but heavier objects need more force to accelerate at the same rate.

Quick Tip: Always convert mass to kilograms when solving physics problems to avoid calculation errors!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

More Newton's Laws and Problem Solving

Newton's Third Law of Interaction states that for every action, there's an equal and opposite reaction FA=FBFA = FB. When you walk, you push against the ground, and the ground pushes back with equal force - that's what propels you forward!

Problem-solving in physics follows a clear pattern: Given (what you know), Required (what you need to find), Equation (the formula to use), Solution (the math), and Answer (with proper units and direction).

For acceleration problems, use a = F/m. When objects are in contact (like two boxes being pushed together), treat them as one system by adding their masses together. The same acceleration applies to both objects since they're moving together.

Remember: Negative answers in physics often indicate direction - like friction force acting opposite to motion!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Work: When Force Meets Motion

Work only happens when an object moves in the direction of the applied force. The formula is W = Fd cos θ, where θ is the angle between force and displacement.

There are three key cases to remember. Positive work occurs when force and motion are in the same direction (θ = 0°), like pushing a cart forward. Negative work happens when force opposes motion (θ = 180°), such as friction slowing down a sliding box.

Zero work occurs when force is perpendicular to motion (θ = 90°). A perfect example is carrying your backpack while walking horizontally - you're applying upward force, but moving sideways, so no work is done against gravity.

Real-world connection: When you lift something straight up, you're doing positive work against gravity. When gravity pulls it back down, gravity does positive work while you do negative work!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Power: Work Done Over Time

Power measures how quickly work gets done, using the formula P = W/t. It can also be expressed as P = Fv cos θ when you know force and velocity.

When solving power problems, always identify whether you're dealing with positive or negative work first. For lifting problems, use θ = 0° since force and displacement are in the same direction (both upward).

The key insight is that power tells us the rate of energy transfer. A crane that lifts 1000 N over 5 meters in 100 seconds has less power than one that does the same work in 50 seconds.

Think about it: A motorcycle and a truck might both climb the same hill (same work), but the motorcycle does it faster, so it has higher power output per unit mass!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Energy: The Capacity to Do Work

Mechanical energy comes in two forms: kinetic energy K=½mv2K = ½mv² for moving objects and potential energy U=mghU = mgh for objects with stored energy due to position.

The Law of Conservation of Mechanical Energy is incredibly powerful - total mechanical energy stays constant: ME = K + U = constant. As a ball falls, potential energy converts to kinetic energy, but the total remains the same.

The work-energy theorem connects work and kinetic energy: W = ΔK = KEf - KEi. This means the work done on an object equals its change in kinetic energy, giving us another way to solve motion problems.

Energy insight: A 1 kg object moving at 6 m/s has the same kinetic energy as a 4 kg object moving at 3 m/s. Speed matters more than mass for kinetic energy!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Energy Applications and Problem Solving

When comparing kinetic energies, remember that velocity is squared in the formula K = ½mv². This means doubling speed quadruples the kinetic energy - which is why car crashes at higher speeds are so much more dangerous.

For potential energy problems, always define your reference point (usually ground level). The height in U = mgh is measured from this reference point.

Conservation of energy problems become straightforward when you remember that energy at point A equals energy at point B: MEA = MEB. Set up your equation as KE+PEKE + PEinitial = KE+PEKE + PEfinal and solve for the unknown.

Pro tip: When an object is released from rest at height h, its speed when it hits the ground is always v = √(2gh), regardless of the path it takes!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Physics Foundations and Measurement

Physics is the natural science that uses experiments, measurements, and math to understand how our universe works. Everything from your smartphone to space rockets operates on physics principles.

The International System (SI) uses standard units: kilograms for mass, meters for length, and seconds for time. This replaced the old system where people used body parts as measurements (which varied from person to person!).

Unit conversion is crucial in physics. Use conversion factors like building blocks: convert inches to feet (÷12), then feet to miles (÷5280). For metric conversions, remember the prefixes: kilo (1000), centi (1/100), milli (1/1000).

Conversion hack: When moving decimal places in metric conversions, count the steps between prefixes. From hectometers to micrometers? That's 8 places to the right!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Vectors vs Scalars

Vectors have both magnitude (size) and direction, like velocity and force. Scalars only have magnitude, like temperature and mass. This distinction is crucial for understanding motion and forces.

Vector representation can be done three ways: using vector notation (A⃗), drawing rays with length proportional to magnitude, or using coordinates (x,y). The arrow's length shows magnitude, while its direction shows the vector's direction.

Displacement vs distance perfectly illustrates the vector-scalar difference. If you walk 25m to the cafeteria and back, your distance is 50m (scalar), but your displacement is 0m (vector) since you ended where you started.

Direction convention: Positive directions are typically North, East, forward, upward, and rightward. Negative directions are South, West, backward, downward, and leftward.

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Vector Components and Angles

Breaking vectors into x and y components uses trigonometry: cos θ for x-components, sin θ for y-components. This makes complex vector problems much easier to solve.

Standard position angles are measured counterclockwise from the positive x-axis (East). To convert from compass bearings to standard position, you often need to add or subtract from 90°, 180°, 270°, or 360°.

When given a vector like "5m, 30° West of North," first convert to standard position (120°), then find components: Ax = 5 cos(120°) = -2.5, Ay = 5 sin(120°) = 4.33.

Angle conversion trick: "West of North" means start from North (90°) and rotate toward West. "North of West" means start from West (180°) and rotate toward North.

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Converting Coordinates to Vector Form

To find magnitude and direction from coordinates (x,y), use the Pythagorean theorem for magnitude: |A| = √x2+y2x² + y². Then use inverse tangent to find the angle: θ = tan⁻¹y/xy/x.

Always use absolute values when calculating magnitude - it's always positive! For the angle, pay attention to which quadrant your vector is in to determine the correct bearing.

When expressing your final answer, choose the most natural bearing format. A vector in quadrant II could be expressed as "N of W" or "W of N" - both are correct, but one might be more conventional depending on the context.

Bearing tip: The angle you calculate with tan⁻¹ gives you one reference angle. Use the quadrant to determine the correct bearing format - practice makes perfect!

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Newton's Law of Motion
1) Law of inertia
$\sum{F}$ = 0
object at rest remains at
rest/continous to be in motion
* static friction
- keeps st

Mag-sign up para makita ang contentLibre ito!

Access sa lahat ng dokumento

Pagbutihin ang iyong mga grado

Sumali sa milyong mga estudyante

Sa pag-sign up, tinatanggap mo ang Terms of Service at Privacy Policy

Akala namin hindi mo na itatanong...

Ano ang Knowunity AI companion?

Ang aming AI Companion ay isang AI tool na nakatuon sa mga estudyante na nag-aalok ng higit pa sa mga sagot lang. Binuo mula sa milyong Knowunity resources, nagbibigay ito ng may-kaugnayang impormasyon, personalized na study plans, quizzes, at content direkta sa chat, na umaangkop sa iyong sariling learning journey.

Saan ko mada-download ang Knowunity app?

Maaari mong i-download ang app mula sa Google Play Store at Apple App Store.

Talaga bang libre ang Knowunity?

Tama 'yan! Mag-enjoy sa libreng access sa mga study content, makipag-connect sa kapwa mga estudyante, at kumuha ng instant na tulong – lahat nasa iyong daliri lang.

15

Smart Tools NEW

I-transform ang note na ito sa: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines

Praktis Exam
Quiz
Flashcards
Essay

Hindi mo mahanap ang hinahanap mo? Tuklasin ang iba pang mga asignatura.

Gustong-gusto kami ng mga estudyante — at magiging ganoon ka rin.

4.9/5

App Store

4.8/5

Google Play

Napakadaling gamitin at maganda ang disenyo ng app. Nahanap ko lahat ng hinahanap ko hanggang ngayon at natuto ako ng marami mula sa mga presentasyon! Tiyak na gagamitin ko ang app para sa isang takdang-aralin sa klase! At siyempre, nakakatulong din ito bilang inspirasyon.

Stefan S

gumagamit ng iOS

Sobrang ganda talaga ng app na ito. Maraming mga study notes at tulong [...]. Ang problemang subject ko ay Pranses, halimbawa, at ang app ay may maraming options para tumulong. Salamat sa app na ito, bumuti ang Pranses ko. Irerekumenda ko ito sa lahat.

Samantha Klich

Android user

Wow, talagang namangha ako. Sinubukan ko lang ang app dahil nakita ko itong ina-advertise nang maraming beses at sobrang nagulat ako. Ang app na ito ang TULONG na gusto mo para sa paaralan at higit sa lahat, nag-aalok ito ng maraming bagay, tulad ng workouts at fact sheets, na SOBRANG nakatulong sa akin.

Anna

iOS user

Pinakamagandang app sa mundo! walang masabi dahil sobrang ganda nito

Thomas R

iOS user

Napakaganda talaga. Nakakapag-review ako ng 10x mas mabuti, itong app ay mabilis na 10/10. Lubos kong inirerekomenda ito sa lahat. Pwede akong manood at maghanap ng notes. Pwede kong i-save ang mga ito sa subject folder. Pwede kong i-review anumang oras kapag bumalik ako. Kung hindi mo pa nasubukan ang app na ito, marami kang nawawala.

Basil

Android user

Ang app na ito ay nagpapalakas ng loob ko sa paghahanda sa exams, hindi lang dahil sa pagpapataas ng aking kumpiyansa sa sarili sa pamamagitan ng mga feature na nagpapahintulot sa iyo na makipag-connect sa iba at mabawasan ang pakiramdam na nag-iisa, kundi pati na rin sa paraan na nakatuon ang app sa pagpapagaan ng iyong pakiramdam. Madali itong i-navigate, masaya gamitin, at nakakatulong sa sinumang nahihirapan sa kahit anong paraan.

David K

iOS user

Sobrang galing ng app! Ilalagay ko lang ang paksa sa search bar at makakakuha na ako ng sagot kaagad. Hindi ko kailangang manood ng 10 YouTube videos para maintindihan ang isang bagay, kaya nakakatipid ako ng oras. Lubos na inirerekomenda!

Sudenaz Ocak

Android user

Sa paaralan, napakahina ko sa math pero salamat sa app, mas mahusay na ako ngayon. Lubos akong nagpapasalamat na ginawa niyo ang app na ito.

Greenlight Bonnie

Android user

napakareliable na app para tumulong at palawakin ang iyong mga ideya sa Math, English at iba pang mga related na paksa sa iyong mga gawain. gamitin mo ang app na ito kung nahihirapan ka sa mga area, susi ito para diyan. sana nag-review na ako dati. at libre rin ito kaya huwag mag-alala tungkol diyan.

Rohan U

Android user

Alam kong maraming apps gumagamit ng fake accounts para mapataas ang kanilang reviews pero ang app na ito ay deserve lahat ng papuri. Dati nakakakuha ako ng 4 sa aking English exams at ngayon nakakuha ako ng grade 7. Hindi ko pa alam ang app na ito tatlong araw bago ang exam at nakatulong ito ng SOBRA. Pakisuyong maniwala sa akin at gamitin ito dahil sigurado akong makikita mo rin ang mga pagbabago.

Xander S

iOS user

SOBRANG KAPAKI-PAKINABANG NG MGA QUIZZES AT FLASHCARDS AT SOBRANG GUSTO KO ANG SCHOOLGPT. PARANG CHATGPT DIN PERO MAS MATALINO!! TINULUNGAN DIN AKO SA AKING MASCARA PROBLEMS!! PATI NA RIN SA AKING TUNAY NA MGA SUBJECTS! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

Grabe talaga ang app na to. Sobrang nakakaboring sakin ang pagreview pero ginagawa ng app na to na sobrang dali mag-organize ng lahat at pwede mong tanungin ang libreng ai para subukin ang sarili mo kaya sobrang buti at madali mong ma-upload ang sarili mong mga bagay. highly recommend bilang isang taong nagte-take ng mocks ngayon

Paul T

iOS user

Napakadaling gamitin at maganda ang disenyo ng app. Nahanap ko lahat ng hinahanap ko hanggang ngayon at natuto ako ng marami mula sa mga presentasyon! Tiyak na gagamitin ko ang app para sa isang takdang-aralin sa klase! At siyempre, nakakatulong din ito bilang inspirasyon.

Stefan S

gumagamit ng iOS

Sobrang ganda talaga ng app na ito. Maraming mga study notes at tulong [...]. Ang problemang subject ko ay Pranses, halimbawa, at ang app ay may maraming options para tumulong. Salamat sa app na ito, bumuti ang Pranses ko. Irerekumenda ko ito sa lahat.

Samantha Klich

Android user

Wow, talagang namangha ako. Sinubukan ko lang ang app dahil nakita ko itong ina-advertise nang maraming beses at sobrang nagulat ako. Ang app na ito ang TULONG na gusto mo para sa paaralan at higit sa lahat, nag-aalok ito ng maraming bagay, tulad ng workouts at fact sheets, na SOBRANG nakatulong sa akin.

Anna

iOS user

Pinakamagandang app sa mundo! walang masabi dahil sobrang ganda nito

Thomas R

iOS user

Napakaganda talaga. Nakakapag-review ako ng 10x mas mabuti, itong app ay mabilis na 10/10. Lubos kong inirerekomenda ito sa lahat. Pwede akong manood at maghanap ng notes. Pwede kong i-save ang mga ito sa subject folder. Pwede kong i-review anumang oras kapag bumalik ako. Kung hindi mo pa nasubukan ang app na ito, marami kang nawawala.

Basil

Android user

Ang app na ito ay nagpapalakas ng loob ko sa paghahanda sa exams, hindi lang dahil sa pagpapataas ng aking kumpiyansa sa sarili sa pamamagitan ng mga feature na nagpapahintulot sa iyo na makipag-connect sa iba at mabawasan ang pakiramdam na nag-iisa, kundi pati na rin sa paraan na nakatuon ang app sa pagpapagaan ng iyong pakiramdam. Madali itong i-navigate, masaya gamitin, at nakakatulong sa sinumang nahihirapan sa kahit anong paraan.

David K

iOS user

Sobrang galing ng app! Ilalagay ko lang ang paksa sa search bar at makakakuha na ako ng sagot kaagad. Hindi ko kailangang manood ng 10 YouTube videos para maintindihan ang isang bagay, kaya nakakatipid ako ng oras. Lubos na inirerekomenda!

Sudenaz Ocak

Android user

Sa paaralan, napakahina ko sa math pero salamat sa app, mas mahusay na ako ngayon. Lubos akong nagpapasalamat na ginawa niyo ang app na ito.

Greenlight Bonnie

Android user

napakareliable na app para tumulong at palawakin ang iyong mga ideya sa Math, English at iba pang mga related na paksa sa iyong mga gawain. gamitin mo ang app na ito kung nahihirapan ka sa mga area, susi ito para diyan. sana nag-review na ako dati. at libre rin ito kaya huwag mag-alala tungkol diyan.

Rohan U

Android user

Alam kong maraming apps gumagamit ng fake accounts para mapataas ang kanilang reviews pero ang app na ito ay deserve lahat ng papuri. Dati nakakakuha ako ng 4 sa aking English exams at ngayon nakakuha ako ng grade 7. Hindi ko pa alam ang app na ito tatlong araw bago ang exam at nakatulong ito ng SOBRA. Pakisuyong maniwala sa akin at gamitin ito dahil sigurado akong makikita mo rin ang mga pagbabago.

Xander S

iOS user

SOBRANG KAPAKI-PAKINABANG NG MGA QUIZZES AT FLASHCARDS AT SOBRANG GUSTO KO ANG SCHOOLGPT. PARANG CHATGPT DIN PERO MAS MATALINO!! TINULUNGAN DIN AKO SA AKING MASCARA PROBLEMS!! PATI NA RIN SA AKING TUNAY NA MGA SUBJECTS! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

Grabe talaga ang app na to. Sobrang nakakaboring sakin ang pagreview pero ginagawa ng app na to na sobrang dali mag-organize ng lahat at pwede mong tanungin ang libreng ai para subukin ang sarili mo kaya sobrang buti at madali mong ma-upload ang sarili mong mga bagay. highly recommend bilang isang taong nagte-take ng mocks ngayon

Paul T

iOS user