AP Physics 1 Question 434: Answer and Explanation

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Question: 434

2. How much work is done by a pitcher in throwing a 0.2 kg ball at a speed of 30 m/s ?

  • A. 3 J
  • B. 9 J
  • C. 30 J
  • D. 90 J

Correct Answer: D



The work done can be calculated using the Work-Energy Theorem: