Question

if a runner is clocked from 20 m to 125 m in 13.5 seconds, what is the runner's velocity in m/s?

Answer 1

So, the runner ran a total length of 125 m in 13.5 seconds.
Divide 125 by 13.5, to get the result of 9.25925926. 
Round this number to get 9.26.
The runner ran 9.26 m/s.
Hope this helps!!