1. The problem statement, all variables and given/known data Two carts equipped with spring bumpers on an air track have an elastic collision. The 253-g cart has an initial velocity of 1.80 m/s [N]. The 232-g cart is initially stationary. What is the velocity of each cart after the collision? 2. Relevant equations I know because cart 2 is initially stationary: m1v1 = m1v1' + m2v2' and 1/2m1v1^2 = 1/2 m1v1'^2 + 1/2m2v2'^2 3. The attempt at a solution I've been trying to solve this by rearranging the equations and subbing them in to each other, but I keep ending up with really complicated equations that I can't seem to solve. Is there a simpler way to look at a problem like this? I'm fine with most collisions that aren't elastic, but the ones that are I can't do. Thanks.