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Help with Velocity

  1. Dec 15, 2008 #1
    1. The problem statement, all variables and given/known data
    A 1200kg car moving at 8m/s to the right strikes a 2000kg truck moving at 4m/s to the left. Afterwards the velocity of the car is is 6m/s to the left. What is the velocity of the truck?

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Dec 15, 2008 #2
    Re: Velocity

    You are supposed to make some attempt at the question before asking for help!
  4. Dec 15, 2008 #3
    Re: Velocity

    you need to specify how much energy is lost in the collision
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