A mass m moves with a velocity $\nu$ and collides inelastically with another identical mass. After collision the $I^{st}$ mass moves with velocity $\frac{\nu}{\sqrt{3}}$ in a direction perpendicular to the initial direction of motion. Find the speed of the second mass after collision :

Question

( A ) $\frac{2}{\sqrt{3}} \nu$
( B ) $\nu$
( C ) $\frac{\nu}{\sqrt{3}}$
( D ) $\sqrt{3} \nu$