If you push for a half hour or a whole hour against a stationary wall
A)no work on the wall is done in either case.
B)half as much work is done during the half hour.
C)twice as much work is done during the half hour.
D)it is impossible to determine how much work is done.

Question

Quizplus · Accepted Answer

In physics, work is defined as force multiplied by the distance moved in the direction of the force. Since the wall does not move, there is no distance moved in the direction of the force, which means no work is done on the wall. It doesn't matter how long you push against the wall, there will still be no work done on the wall. Therefore, option A is the correct answer.

If You Push for a Half Hour or a Whole