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)0 N.
B)equal to the weight of the puck.
C)the weight of the puck divided by the mass of the puck.
D)the mass of the puck multiplied by 10 m/s2.
E)none of the above

Question

Quizplus · Accepted Answer

If ice friction and air resistance are neglected, no force is required to keep the puck moving at a constant velocity due to Newton's first law of motion, which states that an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

A Hockey Puck Is Set in Motion Across a Frozen