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Contact [7]
3 years ago
7

A 20-kg rock sits atop a 30 meter cliff. How much potential energy does it have?

Physics
1 answer:
Brut [27]3 years ago
6 0
Gravitational potential energy ...

=  (mass) x (acceleration of gravity) x (height)

=  (20 kg) x (9.8 m/s²) x (30 m)

=   (20 x 9.8 x 30)  kg-m²/sec²

=   5,880 joules
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<em></em>

I'm gonna go out on a limb here and take a wild guess:

I'm guessing that there's another question glued onto the end of this one, and it asks you to find either her displacement or her average velocity.  I'm so sure of this that I'm gonna give you the solution for that too.  If there's no more question, then you won't need this, and you can just discard it.  I won't mind.

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that would be my answer

hope this helps!!! :)

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