A box is against a wall. A person pushes on the box, but the box does not move. Is this situation an example of a force?


a
Yes, this is an example of a force because a force is a push or pull.
b
No, this is not an example of a force because the box did not move.
c
Yes, this is an example of a force because gravity is pulling the box down.
d
No, this is not an example of a force because a force pulls an object.

a) Yes, this is an example of a force because a force is a push or pull. Even though the box did not move, a force was applied by the person pushing on it. The force may have been balanced by an opposite force, such as friction from the wall, keeping the box stationary.