If the speed of a moving object doubles, then what else doubles?

Name: If the speed of a moving object doubles, then what else doubles?
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Question

Quizplus · Accepted Answer

Momentum is directly proportional to velocity, so if the speed doubles, the momentum also doubles. Kinetic energy, however, is proportional to the square of the velocity, so it quadruples, not doubles. Acceleration is not directly affected by a change in speed unless other forces are involved.

If the Speed of a Moving Object Doubles, Then What