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16 July, 00:08

A car is traveling at 20 m/s and is brought to the rest by applying brakes over a. Of 4 second what is an average acceleration over the time interval

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  1. 16 July, 03:15
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    U = 20 m/s

    v = 0 m/s

    t = 4 s

    a = v - u/t = - 20/4 = - 5m/s²
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