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29 March, 15:36

A stone that starts at rest free falls for 7.0 s. How far does the stone fall in this time?

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  1. 29 March, 17:03
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    Gravitational acceleration is approx 9.8 m/s

    Time is 7s

    a=9.8 m/s

    t=7s

    a = d/t^2

    therefore:

    d = a * t^2

    d = 9.8 * 7^2

    d = 9.8 * 49

    d = 480.2 [m]
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