A block is dragged at constant velocity across a level surface by a force of 6 N.What is the force of friction between the block and the surface?
A)less than 6 N
B)more than 6 N
C)6 N
D)not enough information

Question

Quizplus · Accepted Answer

If the block is being dragged at a constant velocity, this means that the net force on the block is zero. Since the applied force is 6 N, the force of friction must also be 6 N in the opposite direction in order to balance out the applied force and maintain a net force of zero. Therefore, the force of friction is equal to the applied force and is 6 N.

A Block Is Dragged at Constant Velocity Across a Level