1. The problem statement, all variables and given/known data Objects A and C are made of different materials, with different “springiness,” but they have the same mass and are initially at rest. When ball B collides with object A, the ball ends up at rest. When ball B is thrown with the same speed and collides with object C, the ball rebounds to the left. Compare the velocities of A and C after the collisions. Is vA greater than, equal to, or less than vC? 2. Relevant equations Pi = Pf 3. The attempt at a solution A: mb(Vbi) = mVAf B: mbVBi = mbVBf + mvCf Now...I can see that: VAf= mb(Vbi)/m VCf = (mb(Vbi) - mbVBf )/m I don't think I can say, from the above equations which is bigger (VAf or VCf)...do I have to sub one into the other now? How do I continue the solution? Thanks for your help!