how much time would it take for an object to fall 4.7 meters

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how much time would it take for an object to fall 4.7 meters

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Thiên Di 5 years 2021-08-02T20:10:56+00:00 1 Answers 123 views 0

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  1. thanhha
    0
    2021-08-02T20:12:27+00:00
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    Answer:

    t = 0.97 s

    Explanation:

    Given that,

    height, h = 4.7 m

    We need to find the time taken by the object to fall 4.7 m.

    Let it is t. Using second equation of kinematics to solve it such that,

    h=ut+\dfrac{1}{2}gt^2

    u is initial velocity, u = 0

    So,

    h=\dfrac{1}{2}gt^2\\\\t=\sqrt{\dfrac{2h}{g}}\\\\t=\sqrt{\dfrac{2\times 4.7}{9.8}}\\\\t=0.97\ s

    So, the required time is equal to 0.97 seconds.

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