physics

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A 4.5 kg body moving in the +x direction at 5.5 m/s collides head-on with a 2.5 kg body moving in the -x direction at 4.0 m/s. Find the final velocity of each mass for each of the following situations.The collision is elastic.
(4.5 kg mass)
(2.5 kg mass)

  • physics -

    use the conservation of momentum, conservation of energy. A bit of algebra will be required.

  • physics -

    IT DIDN'T WORK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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