Physics - Center of Mass Question with Solution | TestHub

A body of mass$m_1$moving with an unknown velocity of$v_1 \hat{\mathrm{i}},$undergoes a collinear collision with a body of mass$m_2$moving with a velocity$v_2 \hat{\mathrm{i}}.$After the collision,$m_1$and$m_2$move with velocities of$v_3\mathrm{ }\hat{\mathrm{i}}$and$v_4\mathrm{ }\hat{\mathrm{i}},$respectively. If$m_2=0.5\mathrm{ }{m}_1$and$v_3=0.5 v_1,$then$v_1$is: