Answer :
This can mean two things:
1) The object is perfectly still, and the normal force and gravity cancel.
2) The object is moving at a constant velocity, and friction equals the velocity.
1) The object is perfectly still, and the normal force and gravity cancel.
2) The object is moving at a constant velocity, and friction equals the velocity.
The answer is E. stationary objects as well as objects moving with a constant velocity, got 100 on the test