Forces Glossary

A line touching a circle at one point; instantaneous velocity is tangent to the circular path.

Instantaneous velocity directed tangent to a circular path.

A force along the length of a medium, for example, the force in a rope that is exerted on another body.

The constant velocity reached when the resultant force becomes zero.

The force produced by a propulsion system.

The turning effect of a force.

The vector sum of the momenta of all objects in a system.

A condition in which the net force is zero and there is no linear acceleration.