We are asked to determine the average speed given the distance and the time. To do that we will use the following formula:
[tex]v=\frac{d}{t}[/tex]Where:
[tex]\begin{gathered} v=\text{ average velocity} \\ d=\text{ distance} \\ t=\text{ time} \end{gathered}[/tex]Now, we plug in the values:
[tex]v=\frac{20m}{4.5s}[/tex]Solving the operations:
[tex]v=4.44\frac{m}{s}[/tex]Therefore, the average speed is 4.44 m/s
