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Physics

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Which of the following contains the most mechanical energy?

A 10 kg ball at the top of a hill 10 meters high
A 5 kg ball rolling with a velocity of 12 m/s
A 10 kg ball rolling with a velocity of 5 m/s
A 5 kg ball at the top of a hill 10 meters high

HELPS PLEASE!!!!

  • Physics -

    PE = m g h
    KE=1/2 m v^2

    you can calculate these.

  • Physics -

    couldn't u please show me the calculations? that is what i'm having a problem with

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