Find the velocity of a 2.0-kg block at t = 3.0s, initially at rest, when subjected to two forces: $\overrightarrow{F_1}$ = (17$\overrightarrow{i}$ + 13$\overrightarrow{j}$)N, $\overrightarrow{F_2}$ = (-11$\overrightarrow{i}$ + 23$\overrightarrow{j}$)N.