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) zero.
D) equal to the product of its mass times its weight.

Question

Quizplus · Accepted Answer

If ice friction and air resistance are neglected, no force is required to keep the puck sliding at 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