# Physics

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1. π = ___ degrees
180
2. ω:
angular speed. Similar to velocity
3. ω =
Δθ/Δt
4. Vt=

(tangential speed)
5. P:
Period. Time it takes to complete one revolution.
6. f:
Frequency. How many revolutions per second
7. Formula for frequency:
f=1/T
8. α:
angular acceleration
9. Formula for angular acceleration
α=Δω/Δt
10. Ac:
centripetal acceleration. Moves towards center of circle.
11. Law of gravitation
Fg=Gm1m2/r2

• r: disance between m1 and m2
• G=6.67 x 10-11
12. Fc:
Centripetal Force. Net force pointing towards center
13. Formula for Centripetal Force:
Fc=mac

Fc=mv2/r
14. Formula for Torque
τ = rF = rFsinθ
15. Torque is positive if
counterclockwise
16. Torque is negative if
clockwise
17. Translational Motion
normal velocity
18. Rotational Motion
angular velocity
19. Newton's 2nd Law: Rotational Form
Στ=Iα
20. Rotational Kinetic Energy
Kr=1/2Iω2
21. Translational Kinetic Energy
Kt=1/2mv2
22. Conservation of Angular Momentum
Ioωo=Iω
23. θ units