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    greenpeace14's Avatar
    greenpeace14 Posts: 1, Reputation: 1
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    #1

    Nov 19, 2008, 04:30 PM
    Grade 11 Physics Impulse and momentum
    A 0.145 kg baseball is pitched 42 m/s The batter hits it horizontally to the pitcher at 58 m/s A) Find the change in momentum of the ball B) If the ball and bat are in contact for 4.6 x 10 exponent -4 seconds what is the average force during contact?
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Nov 19, 2008, 05:51 PM

    use , and .

    This should answer all your questions.
    rebel-2's Avatar
    rebel-2 Posts: 107, Reputation: 8
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    #3

    Nov 20, 2008, 03:30 PM
    yup for impulse here's an easier equation to remember

    F.dt=dp
    or

    F*(change in time)=(change in momentum)
    impulse=(change in time)/(change in momentum).

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