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Homework Help: 2 mass collission , find speed

  1. Sep 7, 2011 #1
    A particle A of mass 1.6kg collides with another particle B of mass 2.5kg. their initial velocities are u1=2.2i + 1j and u2=0.5i + 0.8j just before impact. After collision, they both merged and becoes a composite particle, which travel with a velocity of V.

    calculate the spend |V| a scalar in m/s

    stuck with this too!!! please help!!!
  2. jcsd
  3. Sep 7, 2011 #2


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    Gold Member

    have you tried doing them in terms of i's and j's seperately? that should solve it.

    [tex]|V| = \sqrt{ V_x^2 + V_y^2 } [/tex]
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