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Need help fast explosive collision.

  1. Mar 20, 2008 #1
    If two carts collide and cart 1 has a spring on it, how can I figure out the final velocity of the first cart????
     
  2. jcsd
  3. Mar 20, 2008 #2

    Doc Al

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    Staff: Mentor

    What's conserved?
     
  4. Mar 20, 2008 #3
    kinetic energy and momentum
     
  5. Mar 20, 2008 #4
    what's throwing me off is the spring....

    the carts are initially at rest together, then the spring on cart 1 is released.
     
  6. Mar 20, 2008 #5

    Doc Al

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    Staff: Mentor

    I thought you said they collided?

    Momentum, yes. Kinetic energy, no. (They start at rest, then begin to move.) Hint: Consider the energy stored in the compressed spring.
     
    Last edited: Mar 20, 2008
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