Suppose a block moves across a rough horizontal surface at constant speed under the action of a horizontal 3-N force. Which statement concerning this situation is not true?

a. There is more than the 3-N horizontal force acting on the block.
b. The net force on the block is 3-N
c. The frictional force on the block has a magnitude of 3-N.
d. The net force on the block is zero Newtons.
e. The block is not accelerated.

Explanation:

A block is moving with constant velocity action the action of 3  N force.

Statement A: False, as the block is moving with constant velocity so net force is zero.

Statement B: False, as the net force is zero.

Statement C: True, the friction force is equal to the applied force.

Statement D: True: The net force is zero so that the block is moving with constant velocity.

Statement E: True, the net force is zero so the acceleration is also zero.

15.3 cos 65 degrees trig