89.51
21.325 Mph
This means an average speed of 22.87 miles per hour over the distance of the race.
A 10.49-second 100-meter dash equates to an average speed of 21.32 miles per hour.
Running a 40-yard dash in 4.2 seconds equates to a pace of 19.48 miles per hour.
(100 meters/16 seconds) x (3,600 seconds/hour) x (1 mile/1,609.344 meters) = 13.981 mph(rounded)
10.2 seconds
I do not know. But when i was twelve, I ran a 100meter dash in about 12, 13 seconds. Is that good?
This means an average speed of 22.87 miles per hour over the distance of the race.
The current World Record for the men's 100M Sprint is 9.58 seconds by Usain Bolt of Jamaica. The current World Record for the women's 100M Sprint is 10.49 Seconds by Florence Griffith-Joyner of the USA.
3.5 seconds in the 30 yard dash equals 17.53 miles per hour.
Ben Johnson
A 10.49-second 100-meter dash equates to an average speed of 21.32 miles per hour.
(50 yards/6.6 seconds) x (3,600 seconds/hour) / (1,760 yards/mile) = 15.496 miles per hour (rounded)
You are running 15.5 miles per hour.
Running a 40-yard dash in 4.2 seconds equates to a pace of 19.48 miles per hour.
4.5 seconds in the 40-yard dash is a pace of 18.18 mph
A 12.5-second 100m equates to a time of 4.572 seconds in the 40-yard dash.
1 miles = 5280/3 yards = 1760 yards. 50 yards / 1760 yards/mile ~= 0.02841 miles 7.2 seconds / 3600 seconds/hour ~= 0.002 hours 0.02841 miles / 0.001833 hours ~= 14.2 miles per hour In general divide 102.27 by your time in seconds to get mph.