A body is projected vertically upward with a velocity $20 ms^{-1}$ . Find the distance travelled by it in 3 s. Take $g=10ms^{-2}$.

Question

$\begin{array}{1 1}(A)\;25\;m\\(B)\;7\;m \\(C)\;9\; m \\(D)\;67 \;m \end{array}$