[tex]\begin{gathered} v1=18\text{ m/s} \\ v2=33\text{ m/s} \\ t=3s \\ a=\text{?} \\ a=\frac{v2-v1}{t} \\ a=\frac{33\text{ m/s}-18\text{ m/s}}{3s} \\ a=\frac{15\text{ m/s}}{3s} \\ a=5m/s^2 \\ \text{The average acceleration is }5m/s^2 \end{gathered}[/tex]
