Angular Velocity

The rate at which something moves around a fixed point, often the center of a circle. The number of degrees the objects moves per unit of time is its angular velocity. If something moves 60 degrees in one second then its angular velocity is 60 degrees per second. This alone does not provide you with much information about the tangential or potential impact speed of the object, which can be quite substantial even if an object is moving at only one tenth of a degree per minute.