Each of these questions has an assertion (A) and a reason (R).
Assertion (A): A person jumping out of the moving train falls forward because his feetsuddenly cometo rest, while his body is in motion with the train.
Reason(R):
This is based on Newton's first law of motion which states that a body continues to be in its state of rest or of uniform motion in compelled by an external force to change that state.
The assertion is correct, as a person jumping off the train falls forward. However, this happens mainly because of a change in inertia, and the reason given here does not actually elaborate on inertia, while it is true about Newton's first law of motion. Hence, both A and R are true, but R is not the correct explanation about A.Â