Posted by Megan on Tuesday, February 15, 2011 at 10:39pm.
write the conservatoin of momentum equation, you get two unknowns, which are the final speeds of each cart.
solve this equation for one of the speeds in terms of the other.
Then, write the conservation of energy equation. PUT the value of the expression you just found above in for one of the speeds, you then have an equation with one unknown.
Have fun, a lot of algebra.
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