If the speed of a motor scooter doubles, which of the following also doubles?
A)momentum
B)kinetic energy
C)acceleration
D)all of the above

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 there is a change in force or mass.

If the Speed of a Motor Scooter Doubles, Which of the Following