[填空题]
A rocket of mass m travelindo;ci9r .yqrbue. :u07p 8(nj gn.wocg with speed $v_0$ along the x axis suddenly shoots out fuel, equal to one-third of its mass, parallel to the y axis (perpendicular to the rocket as seen from the ground) with speed 2$v_0$ Give the components of the final velocity of the rocket.$P_x$: v'$_x$= $v_0$
$P_y$: v'$_y$= $v_0$
