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6 July, 00:21

A shopping cart rolls from x=19.9m to x=5.40m with an average velocity of - 0.418m/s. How much time did it take? (unit=s)

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  1. 6 July, 02:20
    0
    Given

    initial position = Xi = 19.9m

    Final position Xf = 5.4m

    Average velocity = Va = - 0.418m/s

    it shows displacement is reverse.

    To find t=?

    As Va = (Xf - Xi) / t

    t = (Xf-Xi) / (Va)

    t = (5.4-19.9) / (-0.418)

    t = (-14.5) / (-0.418) (-ve sign cancel out at numerator and denominator)

    t = 34.69 s
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