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3 January, 10:59

Determin the kinetic energy of 1000-kg roller coaster car that is moving with the speed of 20. o m/s what if the speed was moving twice the speed

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  1. 3 January, 12:16
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    KE = (1/2) mv²

    KE = (1/2) * 1000 * 20²

    = 200 000J

    If it is moving twice the speed.

    v = 2*20 = 40

    KE = (1/2) * 1000 * 40²

    KE = 800 000J
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