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
Pi = Pf
The Attempt at a Solution
A: mb(Vbi) = mVAf
B: mbVBi = mbVBf + mvCf
Now...I can see that:
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!