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    susus's Avatar
    susus Posts: 138, Reputation: 2
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    #1

    Dec 16, 2010, 03:08 PM
    Two Carts Colliding
    Two Carts Colliding
    A cart of mass M1 = 4.00 kg and initial speed = 5.00 m/s collides head on with a second cart of mass M2 = 2.00 kg at rest. Assuming that the collision is elastic, find the speed of M2 after the collision.
    (in m/s)
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Dec 17, 2010, 07:04 AM

    For elastic collison like this use conservation of momentum and conservation of energy:



    Two equation and two unknowns - take it away!
    susus's Avatar
    susus Posts: 138, Reputation: 2
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    #3

    Dec 17, 2010, 08:15 AM
    Comment on ebaines's post
    oh yeah, before.. I did only the first one, and I thought it's the answer..
    so thanks for the 2nd equation :)
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