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Elastic collision physics homework problem

  1. Jul 14, 2010 #1
    Hey guys im completely stuck and have no idea where to start. Help?

    1. The problem statement, all variables and given/known data

    Car A and Car B collide in an elastic collision. Use the data in the table shown to calculate the maximum compression of the car bumpers. The spring constant of the car bumper is 60 000 N/m. Assume that the cars bumpers are of equal length.



    Car A
    2 500 kg
    75 km/h

    Car B
    3 200kg
    -58km/h
     
  2. jcsd
  3. Jul 14, 2010 #2

    Ush

    User Avatar

    Re: Collisions

    1. what are your relevant equations for elastic collisions.
     
  4. Jul 14, 2010 #3
    Re: Collisions

    it is

    E = 0.5 kx^2
     
  5. Jul 14, 2010 #4

    Ush

    User Avatar

    Re: Collisions

    that's the equation for energy in a spring.
    what are the equations for conservation of momentum: elastic collisions.
     
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