Question

What is needed for work to be done? A force must push on an object without moving it. A force must pull on an object without moving it. A force must cause an object to move along the same direction as the force. A force must act on an object while an equal force acts oppositely on the object.

Answer 1

A force must act on object and cause the object to move...
because work is dependent on displacement .... so displacement is necessary to do.work...