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8 November, 10:16

A car comes to a sudden stop by applying the brake. It accelerates the uniformly at - 4.1m/s^2 and it slows from 9 m/s to 0 m/s. Find the time interval of the acceleration of the car.

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  1. 8 November, 12:30
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    2.25 seconds

    Explanation:

    Change in Acceleration = change in velocity / time interval

    time interval = change in velocity / change in acceleration

    = (9 - 0) / (0 - - 4) = 9/4

    = 2.25 seconds
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