Each of these questions has an assertion (A) and a reason (R).

Question 157

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.
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. 


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