Speed is given by Distance/ Time taken
[tex]\begin{gathered} \text{speed =}\frac{Dis\tan ce}{Time\text{ }}\text{ =}\frac{100\text{ m}}{13.75\text{ s}} \\ \text{Speed = 7.27m/s } \end{gathered}[/tex]The Velocity is 7.27m/s in the direction of the runner