AP Physics 1 Question 222: Answer and Explanation

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Question: 222

3. A box with a mass of 2 kg accelerates in a straight line from 4 m/s to 8 m/s due to the application of a force whose duration is 0.5 s. Find the average strength of this force.

  • A. 4 N
  • B. 8 N
  • C. 12 N
  • D. 16 N

Correct Answer: D

Explanation:

D

The impulse delivered to the ball, J = FΔt, equals its change in momentum. Thus,