The linear speed tangent to a curved path, such as in circular motion.
The number of rotations or revolutions per unit of time; often measured in rotations or revolutions per second or per minute.
That property of an object that measures its resistance to any change in its state of rotation: if at rest, the body tends to remain at rest; if rotating, it tends to remain rotating and will continue to do so unless acted upon by an external net torque.
The product of force and lever-arm distance, which tends to produce rotation.
The average position of the mass of an object. The CM moves as if all the external forces acted at this point.
center of mass
The average position of weight or the single point associated with an object where the force of gravity can be considered to act.