Question

Assertion When the objects $A$ and $B$ move in the same direction, then relative velocity of object $A$ w.r.t. object $B$ is $v_{AB}=v_A-v_B$
Reason When the objects $A$ and $B$ move in opposite direction, then relative velocity of object $B$ w.r.t. object $A$ is $v_{BA}=v_B-v_A$.

• A. Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
• B. Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.
• C. Assertion is correct but Reason is incorrect.
• D. Assertion is incorrect but Reason is correct.

Answer 1

Answer: (C)

Statements II and III are correct but I is incorrect and it can be corrected as,
Even, when we are sleeping, air and blood flow are treated as objects which are in motion w.r.t. the body. Also, while sleeping human beings are in rest, not in motion.