Three particles \( A, B \) and \( C \) of equal mass move with equal speed \( V=5 \mathrm{~ms}^{...

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Three particles \( A, B \) and \( C \) of equal mass move with equal speed \( V=5 \mathrm{~ms}^{-1} \) along the medians of an equilateral triangle as shown in the figure. They collide at the centroid \( G \) of the triangle. After the collision, \( A \) comes to rest, \( B \) retraces its path with the speed \( V=5 \mathrm{~ms}^{-1} \). What is the speed of \( C \) ?
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