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8 September, 22:25

A wagon full of manure accidentally rolls down a driveway for 5.0m while a person pushes against the wagon with a force of 420 N to bring it to a stop. What is the change in kinetic energy for the wagon?

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  1. 9 September, 01:32
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    2100 J

    Explanation:

    Parameters given:

    Force acting on the object, F = 420 N

    Distance moved by object, d = 5m

    The change in kinetic energy of an object is equal to the work done by a force acting on the object:

    W = F * d

    ∆KE = F * d

    ∆KE = 420 * 5

    ∆KE = 2100 J
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