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Inelastic collision problem

  1. Oct 26, 2004 #1
    This problem's got me stumped.

    "After a completely inelastic collision between two objects of equal mass, each having initial speed v, the two move off together with speed v/3. What was the angle between their initial directions?"

    Any help would be appreciated!
  2. jcsd
  3. Oct 27, 2004 #2


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    Science Advisor
    Homework Helper

    Use momentum conservation. You should find that

    [tex]\cos \frac {\theta}{2} = \frac {1}{3}[/tex]
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