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A 5.00 kg ball is on a 10.00 m ledge. If it is pushed off the ledge, how much kinetic energy will it have just before hitting the ground?

Respuesta :

popcornrox37

Conservation of mechanical energy:

The max gravitational energy equals the maximum kinetic energy.

In this case we know max GPE so KEmax = GPEmax

GPE = mgh

GPE = (5)(10)(9.8)

GPE = 490 J

GPE = KE

So...

KE = 490 J

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