SERCP$116\mathrm{.}2.$P$\mathrm{.}026.$

A $82-kg$ fisherman in a $132-kg$ boat throws a package of mass $m=15kg$ horizontally toward the right with a speed of $v_i=4\mathrm{.}6\frac{m}{s}$ as in the figure below. Neglecting water resistance, and assumin at rest before the package is thrown, find the velocity of the boat after the package is thrown.

magnitude $\frac{m}{s}$

direction

$$

$($i$)$