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23 July, 21:38

A piece of metal has attained a velocity of 107.8 m/sec after fallinf for 10 seconds what is its initial velocity

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  1. 23 July, 22:01
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    7.8 m/s

    Explanation:

    Here object is falling with a gravitational acceleration there for we can take acceleration = 10 m / s² and its constant through out the motion there for we can use motion equation

    V = U + at

    V - Final velocity

    U - Initial velocity

    a - acceleration

    t - time

    V=U+at

    107.8=U + 10*10

    = 7.8 m/s
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