A hockey puck is set in motion across a frozen pond. If ice friction and air resistance are neglected, the force required to keep the puck sliding at constant velocity is
A)equal to its weight.
B)equal to its weight divided by its mass.
C)equal to its mass times its weight.
D)none of the above

Question

Quizplus · Accepted Answer

Since there is no friction or air resistance to oppose the motion of the puck, the puck will continue moving at a constant velocity without any external force acting on it. Therefore, no force is required to keep the puck sliding at a constant velocity, and the answer is none of the above.

A Hockey Puck Is Set in Motion Across a Frozen