Physics-Centre of Mass
NEET Physics Centre of Mass Assertion Reason Question
Type: Assertion Reason-assertion-Easy-Class 11
Assertion (A): The center of mass of an isolated system of particles moves with a constant velocity. | Reason (R): The external force acting on the system is zero.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false.
Correct Answer
Option A
Detailed Explanation
In an isolated system, the net external force is zero, which implies that the velocity of the center of mass remains constant as per Newton's first law.
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