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31 July, 04:17

If a piece of wood dropped from a tall building has rezched a velocity of 68.6 m/s, how long has it been falling

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  1. 31 July, 04:45
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    It takes 7.0s for a piece of wood to be falling from a tall building in the velocity of 68.6 m/s

    Explanation:

    v = u + at

    68.6 ms^-1 = 0 ms^-1 + (9.8 ms^-2 x t)

    t = 68.6 ms^-1 / 9.8 ms^-2

    t = 7.0s

    It takes 7.0s for a piece of wood to be falling from a tall building in the velocity of 68.6 m/s
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