Chapter 14, "Rotational Motion"

Angular Displacement

q = s/r

where s = arc length and r = radius.

Average Angular Velocity

where w = angular displacement and t = time.

Average Angular Acceleration

where w = angular displacement and t = time.

Tangential Velocity

v_t = wr

where w = instantaneous angular velocity and r = radius.

Tangential Acceleration

a_t = ar

where a = instantaneous angular acceleration and r = radius.