Well distance=rate x time so rate = distance divided by time.
100/20 is 5
5 meters per second
Legally Carl Lewis.
A 10.49-second 100-meter dash equates to an average speed of 21.32 miles per hour.
100m/40s or 2.5 metres per second.
A 12.5-second 100m equates to a time of 4.572 seconds in the 40-yard dash.
Usain Bolt took 41 steps to set the new world record of 9.58 seconds
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.
11.99 seconds because 100 yard dash is 91 meters. 100 meters/91 meters = 1.09 Then do 11 seconds x 1.09 = 11.99 seconds. If you round it, you basically be getting a 12 second 100 meter dash.
A 12 year old's average time for the 100 meter dash, should be about 15 or 16 seconds.
His 5.0 40-meter dash translates to a time of 4.572 seconds in the 40-yard dash.
Approximately 8 seconds
45 seconds.
11.184 681 46 mile/hour (mph) this is the site I used: http://www.onlineconversion.com/speed_common.htm