What is the force that always opposes motion?

1 Answer
Apr 29, 2018

Friction

Explanation:

Friction is a resistance to motion. Objects moving in air experience friction. A falling object will reach terminal velocity where the resistance do to friction with the air molecules is a force equal to the downward force of gravity.

Friction between solid objects makes sliding an object across the ground or floor difficult. Wheels and lubricates are used to reduce friction and make it easier for objects to slide.