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    bellaluna's Avatar
    bellaluna Posts: 1, Reputation: 1
    New Member
     
    #1

    Feb 10, 2007, 02:33 PM
    Velocity & Physics
    A train approaches a small town with a constant velocity of
    +28.6 m/s. The operator applies the brake, reducing the train’s
    Velocity to +11.4 m/s. If the average acceleration of the train during
    Braking is –1.35 m/s2, for what elapsed time does the operator apply
    The brake?
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
    Uber Member
     
    #2

    Feb 11, 2007, 05:09 AM
    you need to solve 28.6 - 1.35t = 11.4 for t

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