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Centre of Mass and Collisions

A body has its centre of mass at the origin. The y coordinates of the particles of the body may be 1) all positive 2) all negative 3) all non-zero 4) positive for some cases and negative in other cases. Which of the following is correct ?

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(A) 1 and 2

(B) 2 and 3

(C) 2 and 4

(D) 3 and 4

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Centre of Mass and Collisions practice questions for JEE

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