Assertion and Reason on Newton’s Third Law and Inertial Frames – Rankers Physics
Topic: Laws of Motion
Subtopic: Third Law of Motion

Assertion and Reason on Newton’s Third Law and Inertial Frames

Assertion (A): According to the Newton's third law of motion, the magnitude of the action and reaction force in an action reaction pair is same only in an inertial frame of reference.
Reason (R): Newton's laws of motion are applicable only in inertial reference frame.
 
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution:

Newton's third law of motion (action-reaction pairs) is universally valid, not only in inertial frames. Thus, A is false. While Newton's first and second laws require inertial frames, the third law is more fundamental and applies in all frames. Thus, R is also false.

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