Things to Remember for AP Physics 1 Exam

MOI of sphere

MOI of sphere

2/5mr²

MOI of disk, cylinder

1/2mr²

MOI of particle

mr²

MOI of sphere

2/5mr²

MOI of end of stick

1/3mL²

MOI of middle of stick

1/12mL²

Kinematics #1

vf = vi + at

Kinematics #2

vf² = vi² + 2ad

Kinematics #3

d = vit + 1/2at²

Impulse

Force x time = change in momentum

Work

Work = change in KE

Escape velocity

sqrt2 times orbital velocity —> (2GM/2)^1/2

Orbital velocity

(2GM/r)^1/2

Power

Power = work/time = force x velocity

Diameter

2 x pi x r

Kepler’s Third Law

T² = R³ (R in AU = 1.5× 10^8 km)

Newton’s 1st Law

Inertia

Newton’s 2nd Law

fnet = ma

Newton’s 3rd Law

Every action has an equal in magnitude but opposite in direction reaction

—> Normal force of ground on person and normal force of person on ground

—> Gravitational pull of earth on person and gravitational pull of person on earth

Torque Units

Nm

Moment of Inertia Units

kgm²

Angular Velocity/Acceleration Units

rad/s/s

Frequency

Reciprocal of Period