Originally Posted By: paul

red cart 6100 kg mass v +12.84 m/s
blue cart 100 kg mass v -40 m/s
results show that the blue cart bounces off of the red cart
the red cart continues in the + direction.
red cart velocity = +11.13 m/s
blue cart velocity = +63.97 m/s


OK, that's one mass turning around. Now do it for the other 49 masses. See if the red cart changes direction.