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28 January, 10:21

If a girl makes a homemade sling shot that requires a force of 14 N to pull it's pebble (.08kg) into place at 0.1 m from the resting position of the sling shot, the maximum velocity of the pebble will be

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  1. 28 January, 13:41
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    Givent that,

    The required force to pull the peddle is

    F = 14N,

    The peddle has a mass of

    m = 0.08kg

    To a distance of 0.1m

    d = 0.1m

    Using conservation of energy

    The workdone by pulling the peddle to a certain distance is equal to the kinectic energy of the peddle

    Work done = K. E

    F * d = ½ mv²

    14 * 0.1 = ½ * 0.08 * v²

    1.4 = 0.04 v²

    v² = 1.4 / 0.04

    v² = 35

    v = √35

    v = 5.92 m/s

    The velocity of the peddle is 5.92 m/s
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