Physics Middle School

A 20 kg rock is on the edge of a 100 meter cliff. What is the

potential energy of the rock and if the rock falls off the cliff,

what is its kinetic energy just before striking the ground?

a 361.4 kJ

b 1kJ. 1 kJ

C 19.6 kJ, 19.6 kJ

d 10 kl. 5.5 ku

Answers

Answer 1
answer is c hope that helps
Answer 2

Potential energy is  19.6 kJ and kinetic energy is  19.6 kJ.

What is energy?

Energy is the ability or capability to do tasks, such as the ability to move an item (of a certain mass) by exerting force. Energy can exist in many different forms, including electrical, mechanical, chemical, thermal, or nuclear, and it can change its form.

potential energy = mgh = 20*9.8*100 = 19.6 KJ

At the lowest point all potential energy is converted into kinetic energy so kinetic energy = 19.6 KJ.

Potential energy is  19.6 kJ and kinetic energy is  19.6 kJ.

To learn more about energy refer to the link:

brainly.com/question/1932868

 #SPJ6

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