Answer
$$v=12 \mathrm{\ m} / \mathrm{s}$$
Work Step by Step
$\text{From Table 2-1}$
$x-x_{0}=v t-\frac{1}{2} a t^{2} \Rightarrow 27 \mathrm{m}-0=v(3.0 \mathrm{s})-\frac{1}{2}\left(2.0 \mathrm{m} / \mathrm{s}^{2}\right)(3.0 \mathrm{s})^{2}$
which leads to $v=12 \mathrm{m} / \mathrm{s}$
