Three particles A, B and C of equal mass move with equal speed V along the medians of an equilateral triangle as shown in hgure. They collide at the centroid G of the triangle. After the collision, A comes to test, B retraces its path with the speed V. What is the velocity of C ? A. v, direction `bar(OA)`B. 2v, direction `bar(OA)`C. 2v, direction `bar(OB)`D. 2v, direction `bar(BO)`

Three particles A, B and C of equal mass move with equal speed V along

1.	Three particles A, B and C of equal mass move with equal speed V along the medians of an equilateral triangle as shown in hgure. They collide at the centroid G of the triangle. After the collision, A comes to test, B retraces its path with the speed V. What is the velocity of C ? A. v, direction `bar(OA)`B. 2v, direction `bar(OA)`C. 2v, direction `bar(OB)`D. 2v, direction `bar(BO)`
Answer» Correct Answer - D Initial momentum of system is zero so, final momentum should also be zero. Finally `A` comes to rest after collision, so to have final momentum zeero, `B` and `C` should move in opposite directions.

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