Three particles` A, B` and `C` of equal mass move with equal speed `V = 5 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 ms^(-1)`. What is the speed of `C`?