AP Physics 1 Question 433: Answer and Explanation

Test Information

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Question: 433

1. A 2 kg rock is dropped off a cliff with a height of 20 m. What is the speed of the rock at the bottom of the hill?

  • A. 10 m/s
  • B. 14 m/s
  • C. 20 m/s
  • D. 40 m/s

Correct Answer: C

Explanation:

C

Apply Conservation of Mechanical Energy: