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11 September, 02:26

What is the mechanical energy of a 500 kg Rollercoaster car moving with a speed of 3 m/s at the top hill that is 30 my high

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  1. 11 September, 02:46
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    KE + PE

    0.5*m*v^2 + m*g*h

    0.5*500*3^2 + 500*9.81*30

    149.4 kJ
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