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A 20 kg rock is perched atop a cliff that is 100 m high. What is its potential energy? A. 200,000 J B. 0.20 C. 2,000 u D. 19,600 J
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3 votes
A 20 kg rock is perched atop a cliff that is 100 m high. What is its potential

energy?
A. 200,000 J
B. 0.20
C. 2,000 u
D. 19,600 J

User Aakanksha
by
5.6k points

2 Answers

3 votes

Answer:

D

Step-by-step explanation:

User WilQu
by
5.8k points
6 votes

Answer:

D. 19,600 J

Step-by-step explanation:

The formula for potential energy(PE) is PE = mgh, with m standing for mass, g for acceleration due to gravity, and h for height. The acceleration due to gravity on earth is constant, 9.8 meters per second squared. Substituting the formula would give PE = (20)(9.8)(100)/ PE = 19,600 J.

User Damian Vogel
by
5.6k points
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