Question

multiple choice question
sliding friction is the force that______the motion of two surfaces moving past one another.
o stops
o opposes
o accelerates
o maintains

Explanation:

Sliding friction acts in the direction opposite to the relative motion of the two surfaces. It doesn't stop the motion (unless force is enough, but generally just opposes), doesn't accelerate (as it's a resistive force), and doesn't maintain (it's a force that resists change in motion state by opposing).

Answer:

opposes