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29 January, 20:51

A car travelling with 20 m/s, comes to halt after travelling 18 m. Find the time taken by the car to stop.

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  1. 29 January, 20:56
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    The answer is 1.8 m/s.

    Explanation:

    Formula of speed is given below:

    Speed, V = Distance / time

    Given dа ta:

    Distance, d = 18 m

    Initial veliocity = 20 m/s

    Final velocity = 0 m/s

    Time taken, t = ?

    Find average speed:

    Average speed = (initial velocity + final velocity) / 2

    = (20 + 0) / 2

    = 20/2 = 10 m/s

    Average speed = distance / time

    Time = distance / Average speed

    Time, t = 18m / 10ms-1 = 1.8 m/s

    The time taken by the car is 1.8 m/s
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