AP Physics Units & Equations

displacement (x)

meters

mass (m)

kilograms (kg)

time or period (t or T)

seconds (s)

velocity (v)

m/s

acceleration (a)

m/s²

Force (F)/Newton (N)

kgm/s²/N

coefficient of friction (mew)

unitless

momentum (p)/ impulse (p)

kgm/s or Ns

all types of energy (K, U, W, etc.)

joules (j)/ Nm/ kgm²/s²

spring constant (k)

N/m / kgm²s²

power (P)/watts (W)

(W)/ J/s / kgm²/s³

angular displacement (theta)

radians (rads)

Angular Speed or velocity or frequency (w)

radians per second (rad/s)

Angular Acceleration (a)

rad/s²

Rotational Inertia or Moment of Inertia (I)

kg m²

Angular Momentum (L)

kg m²/s

Torque (t)

Nm = kgm²/s²

Frequency (f)/Hertz (Hz)

1/s

Volume (V)

m³

Area (A)

m²

Density (p)

kg/m³

pressure (P)

pascale (Pa)/ N/m²

Volume Flow Rate (Q)

m³/s

Newtons 2nd Law

F=ma

gavitation

F=Gm1 m2/r^2

friction

F=mewN

Hooke’s Law

F=-kx

centripital acceleration

a=v²/r

kinetic energy

K=1/2(m)v²

work

W=Fd

work KE

change in K= net work

potential energy of a spring

U=1/2(k)change in x²

PE at a distance

U=-Gm1m2/r