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# Necessary AP Physics Equations

Hey, does anyone have an idea of the crucial equations to remember for the AP Physics test? I'm trying to gather everything but there are just so many! Some advice on which ones to prioritize would be a lifesaver.

a month ago

Sure, it's understandable that all the equations can seem overwhelming at first! Here are a few essential equations that you should have at your fingertips for the AP Physics exam.

For Motion:

1. Average Velocity = (Final Position - Initial Position) / Time

2. Acceleration = Change in Velocity / Time

3. Final Velocity = Initial Velocity + (Acceleration Time)

4. Position = Initial Position + (Initial Velocity Time) + (0.5 Acceleration Time^2)

For Forces and Newton's Laws:

5. Force = Mass Acceleration (Newtons 2nd Law)

6. Force of Friction = Friction Coefficient Normal Force

7. Centripetal Force = (Mass Velocity^2) / Radius

For Energy and Momentum:

8. Work Done = Force Distance cos(θ) (when the force and displacement are not parallel)

9. Kinetic Energy = 0.5 Mass Velocity^2

10. Momentum = Mass Velocity

11. Conservation of Momentum: Initial Momentum = Final Momentum

For Circular Motion and Gravitation:

12. Centripetal Acceleration = Velocity^2 / Radius

13. Gravitational Force = G (m1m2) / (distance)^2

For Electricity and Magnetism:

14. Ohm's Law: Current = Voltage / Resistance

15. Coulomb’s Law: Force = k |q1q2| / (distance)^2

16. Magnetic Force: F = q vBsinθ

Remember, while knowing these equations is vital, it's equally essential to understand the concepts behind them and when to apply each one. Lastly, the AP Physics formula sheet will be given on the exam day, so familiarize yourself with it so you know what formulas are given and can focus on understanding the concepts. Good luck with your studying!

a month ago