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Collision between two balls, determine the speed of other ball

  1. Mar 25, 2012 #1
    1. The problem statement, all variables and given/known data

    This figure shows two identical billiard balls before and after a glancing collision. Determine the speed of the other ball.

    module 2 num 4.jpg

    2. Relevant equations

    0=mv1sin30- mv2sin60


    3. The attempt at a solution

    v1= [(0.05m/s)sin60]/(sin(30))= 0.087 m/s


    Here I am looking for someone to check my calculations and that I have respected the proper number of significant figures. I was also wondering if anyone could explain to me what the difference is between an elastic collision and a glancing collision? Thanks so much in advance!
     
  2. jcsd
  3. Mar 25, 2012 #2
    A glancing collision is simply a type of collision where the objects strike at an angle. Elastic and inelastic collisions have to do with the energy and momentum conserved. Your answer looks right to me.
     
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