Two trains A and B are running in the same direction on the parallel rails such that A is faster than B. Packets of equal weight are transferred from A to B. What will happen due to this :

Options

A. A will be accelerated but B will be retarded
B. B will be accelerated but A will be retarded
C. there will be no change in A but B will accelerated
D. there will be no change in B, but A will be accelerated

Answer

B

Explanation

Packet from A falls with greater momentum on B. Therefore, B is slightly accelerated.