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8 September, 03:41

Starting from rest, a car accelerates at a rate of 4.2 m/s2 for a time of 5 seconds, What is its velocity at the end of this time?

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  1. 8 September, 03:49
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    a = v/t

    So ...

    a x t = v

    Acceleration is 4.2

    and time is 5

    (4.2) (5) = v

    v = 21 m/s
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