Assertion. The motion of centre of mass of a system of two particles is affected by the actual direction of interna forces
Reason : Centre of mass is affected both by external arid-internal forces.

Options

A. If both Assertion and Reason are true and Reason is the correct explanation of Assertion
B. If both Assertion and Reason are true but Reason is not correct explanation of Assertion.
C. If Assertion is true but Reason is false.
D. If both Assertion and Reason are false.

Answer

D

Explanation

The motion of centre of massis affected only by external forces and not by internal forces. Hence, the actual direction of internal forces is immaterial.