the force of gravity the force of friction the force of magnetism the force of the student's push
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A student sets a block at the top of a wooden ramp. The student pushes the block. As the block slides down the ramp, it slows down and then comes to a stop. What force causes the block to slow down?
Possibilities:
- the force of gravity
- the force of friction
- the force of magnetism
- the force of the student's push

the force of friction