AP Physics 1 Question 219: Answer and Explanation

Test Information

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Question: 219

9. A force of 200 N is required to keep an object sliding at a constant speed of 2 m/s across a rough floor. How much power is being expended to maintain this motion?

  • A. 50 W
  • B. 100 W
  • C. 200 W
  • D. 400 W

Correct Answer: D

Explanation:

D

Using the equation P = Fv, find that P = (200 N)(2 m/s) = 400 W.