Question

9. In 2001, Alan Webb broke Jim Ryun's 36-vear-old high school mile record by running I mile

in 3 minutes 53.43 seconds. How fast was this in feet per second?

Answer 1

`22.62(ft)/(sec)`

Explanation:

we know that

`1\ mi=5,280\ ft`

To convert miles to feet multiply by 5,280

`1\ min=60\ sec`

To convert minutes to seconds multiply by 60

we have

`3\ min\ 53.43\ sec=3(60)+53.43=233.43\ sec`

To find out the speed in feet per second, divide the distance in feet by the time in seconds

so

`(5,280)/(233.43)=22.62(ft)/(sec)`