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    17pajarita's Avatar
    17pajarita Posts: 2, Reputation: 1
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    #1

    Oct 22, 2012, 07:36 PM
    Change of momentum
    What is the change of momentum (impulse) applied to a baseball when thrown from rest with a 250 N force (5 kg mass accelerating at 50 km/hr)?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    Oct 23, 2012, 05:47 AM
    First, if a 5 Kg ball accelerates to 50 Km/Hr that does not mean that it was subjected to 250 N. Remember that F=ma, not mv.

    The impulse applied to the ball is defined as , which equals change in momentum . You have values for m and delta v, so you can calculate the impulse directly.
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