Linear or tangential velocity is the instantaneous or average rate of change of position or displacement of a rigid body. It is speed of a body in a specified direction measured in meters per second (ms-1). Angular velocity is the rate at which a rigid body or point rotates around a fixed axis, which is measured in degrees, revolutions per unit time or radians per second.
See Acceleration, Isotonic contraction, Kinematics, Moment of inertia (I), Muscle tone (or power), Pulsatility index (PI), Radian, Resultant, Vector