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1 December, 13:10

A motorcycle is moving at 18 m/s when its brakes are applied, bringing the cycle to rest in 4.7 s. To the nearest meter, how far does the motorcycle travel while coming to a stop?

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  1. 1 December, 13:32
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    the motorcycle travels 42.4 meters until it stops.

    Explanation:

    Vi = 18 m/s

    Vf = 0 m/s

    t = 4.7 sec

    Vf = Vi - a*t

    deceleration:

    a = Vi/t

    a = 18m/s / 4.7 sec = > a=-3.82 m/s²

    x = Vi*t - (a * t²) / 2

    x = 42.4m
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