AP Physics 1 Question 433: Answer and Explanation
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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
Apply Conservation of Mechanical Energy: