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MCAS Physics Exam Practice

Category - Introductory Physics

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In a competition, weightlifter 1 lifts a 100 kg weight from the floor. Weightlifter 2 also lifts a 100 kg weight to the same height above the floor, but takes a longer time to do so. Which of the following statements describes the work done and the power used by the weightlifters?

  1. Weightlifter 2 does the same work and uses less power compared with weightlifter 1.
  2. Weightlifter 2 does less work and uses the same power compared with weightlifter 1.
  3. Weightlifter 2 does the same work and uses more power compared with weightlifter 1.
  4. Weightlifter 2 does more work and uses the same power compared with weightlifter 1.
Explanation
Answer: A - Weightlifter 2 does the same work and uses less power compared with weightlifter 1.
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