1. The problem statement, all variables and given/known data 2. Relevant equations 3. The attempt at a solution I solved questions a) and b) no problem but the thing is that in c) i said that B will hit the end first so at first the tube will move with a speed Vtube1 ( Vb=x/t).So t=23.25s . After some time which i found to be 47.17 s , object A will hit the other end so the tube will now move by δV = Va-Vb . But in the solutions it says that the tube's velocity will be zero!!! can you please explain ?!