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Physics force question

  1. Apr 11, 2010 #1
    1. The problem statement, all variables and given/known data

    while standing on a horizontal frictionless surface, a 45kg student throws a 3.0kg object to her right. during the throw the object was accelerated horizontally through a distance of 0.6meters from rest to a velocity of 9.6m/s.

    what was the velocity of the student when the object was released?
  2. jcsd
  3. Apr 11, 2010 #2
    momentum must be conserved.

    [tex] p = mv[/tex]
    [tex] P_i=P_f[/tex]

    Remember that momentum is a vector, so signs matter. This will be used in this solution when you try to find the velocity of the student that would bring the final sum to zero.
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