Question

422The average NFL running back can runthe 40-yard dash at a speed of 8.8 yards per second What is the average time of runningbacks for the 40-yard dash?

Answer 1

Given information:

Distance;

`s=40\text{ yards}`

Speed;

`v=8.8\text{ yards per second}`

The speed is given as,

`v=(s)/(t)`

Here, t is time.

The expression for the time is,

`t=(s)/(v)`

Substituting all known values,

`\begin{gathered} t=\frac{40\text{ yard}}{8.8\text{ yards per second}} \\ \approx4.55\text{ s} \end{gathered}`

Therefore, the average time of running back for the 40-yard dash is 4.55 s.