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24 February, 11:43

A body starts from rest and moves with a uniform acceleration of 4m/s2 until it travels a distance of 800m, find the find velocity?

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  1. 24 February, 13:18
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    A=4 m/s2

    s=800m

    u=0 m/s

    s=ut + 1/2 at2

    800=0+1/2*4*t2

    800=2t2

    400=t2

    t=20 s

    a = (v-u) / t

    4=v-0/20

    80=v

    v=80 m/s
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