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Homework Help: Can Anyone help me, please !

  1. Apr 11, 2008 #1
    Can Anyone help me, please!!!!!!!!!!!

    An automatic nucleus initially moving at 500 m/s emits an alpha particle in the direction of its velocity, and the new nucleus shows to 450 m/s. If the alpha particle has a mass of 4.0 u and the original nucleus has a mass of 222 u, what speed does the alpha particle have when it is emmited ?
  2. jcsd
  3. Apr 11, 2008 #2


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    Homework Helper

    Could conservation of momentum help you? Try it.
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