Laws Of Motion Question 410

Question: Two trains A and B are running in the same direction on parallel tracks such that A is faster than B. If packets of equal weight are exchanged between the two, then

Options:

A) A will be retarded but B will be accelerated

B) A will be accelerated but B will be retarded

C) there will be no change in velocity of A but B will be accelerated

D) there will be no change in velocity of B, but A will be accelerated

Show Answer

Answer:

Correct Answer: A

Solution:

[a] Initially, the momentum of packet in train A is more than in train B. When packets are changed the packet reaching train A being of lower momentum will retard the train A but packet reaching train B, being of higher momentum will accelerate B.



NCERT Chapter Video Solution

Dual Pane