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9 April, 20:47

If a fox starts from rest and accelerates at a rate of 1.1 m/s^2, how long does it take the fox to run 5 m A. 3.0s B. 4.5s C. 9.1s D).22s

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  1. 9 April, 20:52
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    Given:

    u=0 m/s

    a=1.1 m/s^2

    S=5 m

    t=time it takes to run 5 m

    Use the kinematics equation

    S=ut + (1/2) at^2

    =>

    5=0*t + (1/2) 1.1 (t^2)

    solve for t

    t=sqrt (5*2/1.1) = 3.015 seconds.
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