$ = u + \frac{{3{t^3}}}{3} + \frac{{2{t^2}}}{2} + 2t = u + {t^3} + {t^2} + 2t$
$ = 2 + 8 + 4 + 4 = 18\;m/s$ (As $t = 2\, sec$)
$[g = 10\,m/{s^2}]$
$\begin{array}{|c|c|c|c|c|} \hline t( s ) & 0 & 1 & 2 & 3 \\ \hline x ( m ) & -2 & 0 & 6 & 16 \\ \hline \end{array} $
(જ્યાં $v$ વેગ છે)