40 yards in 4 seconds =
(10 yard/second) x (3,600 second/hour) x (1 mile/1,760 yards) = 20.455 mile/hour (rounded)
Running a 40-yard dash in 4.2 seconds equates to a pace of 19.48 miles per hour.
3.5 seconds in the 30 yard dash equals 17.53 miles per hour.
an hour and forty minutes.
They don't. It would not be feasible to do this. 100 seconds is one minute forty seconds. One hour would be 3,600 seconds.
144,000 seconds = 40 hours = 1 work week
(40 meters) per (ten seconds) is 8.94774517 miles per hour
(50 yards/6.6 seconds) x (3,600 seconds/hour) / (1,760 yards/mile) = 15.496 miles per hour (rounded)
A 10.49-second 100-meter dash equates to an average speed of 21.32 miles per hour.
You are running 15.5 miles per hour.
(100 meters/16 seconds) x (3,600 seconds/hour) x (1 mile/1,609.344 meters) = 13.981 mph(rounded)
There are 3,600 seconds in an hour.
The sprinter's speed is 22.53 miles per hour.