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    britsgreene's Avatar
    britsgreene Posts: 2, Reputation: 1
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    #1

    Oct 18, 2009, 07:45 PM
    Physics Acceleraction
    You are traveling down the street at 9.0 m/s when a dog runs out in from the car. If you apply the brakes immediately, resulting in a uniform acceleration of 4.1 m/s(squared), how long does it take you to stop and how far away must the dog be to avoid getting hit?
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
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    #2

    Oct 18, 2009, 08:04 PM

    If you accelerate you are more likely to hit the dog than avoid him. Did you mean decelerate?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #3

    Oct 19, 2009, 10:15 AM

    Or perhaps, the OP missed a negative sign in front of the value.

    Anyway, the equation is used for the first part, and for the second part, is used.
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