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physics

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Please help me
A 2 kg rock is released from rest at a height of 29 m. Ignore air resistance and determine the kinetic energy, gravitational potential energy, and total mechanical energy at each of the following heights;20m 15m 9m

  • physics - ,

    PE= mgh at any height.

    KE at any height= InitialPE-finalPE
    Total mech energy = KE+ PE

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