When work is done on a body by an external force, its

Represent work done on a body by a variable force, graphically.

Work is always done on a body when

Work is always done on a body when

Show that the work done by an external constant force on a body is equal to the change in kinetic energy of the body.

The work done by the external forces on a system equals the change in

The work done by the external forces on a system equals the change in

The work done by the external forces on a system equals the change in