1. The problem statement, all variables and given/known data http://i.imgur.com/c5pOIe8.png & http://i.imgur.com/zdxfXLE.png Sitting in a parking lot you witness a minor, but still noteworthy collision between two cars. You wondered, "Is momentum really conserved in collisions?" It didn't seem like it was in the real world so you made the hypothesis, "Momentum is not conserved in all collisions. Collisions with less elasticity will lose more momentum than collisions with higher elasticity." To test your hypothesis you used a simulation to gather data for two colliding objects. You looked at both linear (straight line) and nonlinear collisions for three different values of elasticity; 100% elastic, 50% elastic, and 0% elastic. You are to use the data as your basis to show the degree of momentum conservation and whether your hypothesis is validated or not. 2 & 3 Any help at all would be appreciated! I have been stuck on this for over a day now and it's starting to get me a little flustered. I mean, I know how to figure out the final velocity of entangled masses or just one object after a collision, but how do I do it with this data? I'm really lost. What does Vx, Vy mean and how do we use distance to determine if momentum is conserved? What does 100% or 50% elasticity mean? I thought there were only Perfectly Inelastic, Elastic or in between, but I never found a way to measure the elasticity? I thought that I could make use of these equations; p = mv ; FΔt = mvf - mvi ; Δx = 1/2(vi + vf)Δt ; m1V1i + m2v2i = (m1 + m2)vf ; 1/2(m1V1i)^2 + 1/2(m2V2i)^2 = 1/2(m1V1f)^2 + 1/2(m2V2f)^2 But as I said, I'm not sure how to interpret the data.. I'm not really sure what to write down either. Do I just do equations for each one? Any help would be so very appreciated. Thanks in advance.