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15 May, 17:54

A bicyclist was moving at a rate of 8 m/s, and then sped up to 10 m/s. If the cyclist has a mass of 120 kg, how much work was needed to increase his velocity? (Hint: Use the work-kinetic energy theorem.)

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  1. 15 May, 18:08
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    W=∆KE

    KE=1/2m∆v^2

    =1/2*120 * (10-8) ^2

    =240j
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