Two sticky balls $m_1=0\mathrm{.}2kg$ and $m_2=0\mathrm{.}4kg$ moves toward each other at $10\frac{m}{s},$ as shown in the figure. If after colliding the two balls stuck with each other, find

Two sticky balls $m_1=0\mathrm{.}2kg$ and $m_2=0\mathrm{.}4kg$ moves toward each other at $10\frac{m}{s},$ as shown in the figure. If after colliding the two balls stuck with each other, find their combined velocity.

ach other at $10\frac{m}{s},$ as shown $h$ other, find their combined their combined velocity.