Choose the correct statement(s):(A) The posit | vedclass

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(D) Statement $(A)$ is incorrect because the position of the centre of mass is a physical property of the system and is independent of the choice of t

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Both $(A)$ and $(D)$ are wrong

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(D) Statement $(A)$ is incorrect because the position of the centre of mass is a physical property of the system and is independent of the choice of the coordinate system.Statement $(B)$ is correct because the motion of the centre of mass is governed by the net external force acting on the system,i.e.,$\vec{F}_{ext} = M\vec{a}_{cm}$.Statement $(C)$ is correct because internal forces cancel each other out in pairs according to Newton's third law,so they do not affect the motion of the centre of mass.Statement $(D)$ is incorrect because internal forces cannot change the state of motion of the centre of mass.Therefore,statements $(A)$ and $(D)$ are wrong.

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