George is trying to move a heavy bookshelf across the classroom. He pushes on the bookshelf with a force of 57 N to the right. Friction is resisting his movement with a force of 78 N. The bookshelf
does not move. A friend comes to help George. The friend pushes the bookshelf in the same
direction as George with a force of 25 N. What will happen to the bookshelf?
The bookshelf will move to the left with a force of 25 N
The bookshelf will not move.
The bookshelf will move to the right with a force of 82 N
The bookshelf will move to the right with a force of 4 N.