Question

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

• 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 be accelerated.
• D. There will be no change in $B$ but $A$ will be accelerated.

Answer 1

Answer: (B)

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