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17 August, 23:15

A 700 kg racecar slowed from 30 m/s to 15 m/s. What is the change in momentum

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  1. 17 August, 23:58
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    Momentum = (mass) x (speed)

    Original momentum = (700 kg) x (30 m/s) = 21,000 kg-m/s

    Final momentum = (700 kg) x (15 m/s) = 10,500 kg-m/s

    Change in momentum = - 10,500 kg-m/s.
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