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# What is the potential energy of a 20 kg rock placed at the top of a cliff with a height of 100 meters?

Updated: 8/11/2023

Wiki User

9y ago

mass = 20 kg

height = 100 m

acceleration due to gravity = 10 m/s2

U = mgh

= 20 X 100 X 10

= 20000 J

or

= 220kJ

Wiki User

13y ago

Wiki User

8y ago

19,600 j "Apex"

Wiki User

9y ago

The rock's PE is 19,600 joules.

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Q: What is the potential energy of a 20 kg rock placed at the top of a cliff with a height of 100 meters?
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