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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 ?

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Verified by Experts

The correct Answer is:
A, B, C, D

Initially By symmetry, the momentum of the system is zero.
Finally The momentum of the system should be zero.
`:. mV=mV' rArr V'=V`
The velocity of C is V and is in opposite direction to the
retraced velocity of B as shown in the figure.
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