About 24 miles per hour.
He is running at approximately 14.91 miles per hour.
His pace is 8.4 miles per hour.
Running the 100-meter dash in 12.7 seconds is the same as running the 40-yard dash in 4.645 seconds.
Legally Carl Lewis.
An average time for a 14-year-old running the 50 meter dash is around 9 seconds. For a 100 meter dash, it would be about 13 seconds.
11.184 681 46 mile/hour (mph) this is the site I used: http://www.onlineconversion.com/speed_common.htm
100 Meters = 328.0839895013123 Feet So if both runners ran their respective races in 10.00 seconds, the runner of the 100 meter race would have run over 28 feet further than the runner of the 100 yard dash, and therefore would have been running at a higher average speed.
u cant compute a speed (miler per hour) from a time (seconds) alone
The men's world record in the 400 meter dash is 43.18 seconds. The men's world record in the 400 meter hurdles is 46.78 seconds. This is a difference of 3.60 seconds. The women's world record in the 400 meter dash is 47.60 seconds. The women's world record in the 400 meter hurdles is 52.34 seconds. This is a difference of 4.74 seconds.
Usain Bolt took 41 steps to set the new world record of 9.58 seconds