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Science 6th final exam:

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?

Yes, this situation is an example of a force. The person is applying a force on the box, but the box is exerting an equal and opposite force in response, causing it to remain stationary.

person force on box = +F

box force on person = -F
box force on wall = F
wall force on box = -F

Total force = 0
so acceleration = 0

That's correct! The net force on the box is zero, so the box does not accelerate.

Yes, this situation is an example of a force. When the person pushes on the box, they apply a force to it. However, the box does not move because there is an equal and opposite force acting on it, which is the friction between the box and the wall. This force of friction counteracts the force applied by the person, resulting in no movement of the box.