1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Momentum Elastic collision

  1. Mar 11, 2012 #1
    Mass of cart A: 1kg
    Mass of Cart B: 3Kg
    Spring potential energy: 24 Joules
    Two carts are pushed apart when the spring is released.
    Thats all the given and i'm suppose to find the final velocity.

    I have no idea how to get started.
    For me to use Es=(1/2)K*DeltaX^2, i don't have delta x or spring konstant.
    For me to use P=M*V, Mass is not give and i dont know the momentum.
    The only other equation i have i think that is related to this topic is the impulse equation. F*deltaT= Impulse
  2. jcsd
  3. Mar 11, 2012 #2
    When i drew the momentum bar graph, i set spring as the impulse so there was no momentum in beging but some at the end.
  4. Mar 11, 2012 #3
    Now i figured out using lol diagram that es would be equal to ek so then Ek=.5*m*V^2 and found the velocity not using the momentum. Anyone think what i did was wrong?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook