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Thread: A one dimensional...

  1. July 21st 2006, 10:36 AM #1
    pocahontas
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    Question A one dimensional...

    Help me please!
    Attached Thumbnails Attached Thumbnails A one dimensional...-gash.jpg  
    Last edited by CaptainBlack; July 21st 2006 at 10:45 PM.
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  2. July 21st 2006, 10:54 PM #2
    CaptainBlack
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    Quote Originally Posted by pocahontas
    Help me please!
    a)The impulse is:

    \int_0^T \ F(t)\ dt,

    T, the duration over which the force is acting, so in this case it is the shaded area in the figure.

    b)The average force is:

    \frac{\left(\int_0^T\ F\ dt\right)}{T}

    so is the shaded area divided by 0.14s.

    RonL
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  3. July 21st 2006, 11:18 PM #3
    CaptainBlack
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    Quote Originally Posted by pocahontas
    Help me please!
    (c) the change in momentum is equal to the average force times the duration,
    or to the impulse. So the change in speed is the absolute value of the impulse
    divided by the mass.

    RonL
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