5. A student tries to push a bookshelf across a room. She applies as much force as possible, but she cannot make the bookshelf move. Which statement BEST describes why the bookshelf does not move?
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1 point
The student does not apply enough force to the bookshelf, so the forces are unbalanced.
The student does not apply enough force to the bookshelf, so the forces are still balanced.
The student applies too much force to the bookshelf, and now the forces on the bookshelf are balanced.
The student applies too much force to the bookshelf, and now the forces on the bookshelf are unbalanced.