Wiki User
∙ 12y agoWell distance=rate x time so rate = distance divided by time.
100/20 is 5
5 meters per second
Wiki User
∙ 12y agoWiki User
∙ 13y ago5.1 m/s
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
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.
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.
11.184 681 46 mile/hour (mph) this is the site I used: http://www.onlineconversion.com/speed_common.htm
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.
1) There are 1609.34 meters in one mile. 1609.34 is 8.05 times more than 200. So take the time that the runner ran the race in and multiply it by 8.05. 2) There are 3600 seconds in an hour. Divide the product you got from multiplying the race time by 8.05 into 3600 and you will get the MPH of the time. EXAMPLE: Someone runs the 200 meter race in 20 seconds flat. Multiply 20 seconds by 8.05 and you get 161. Divide 161 into 3600 and you get 22.36. A runner who ran the 200 meters in 20 seconds flat ran at 22.36 MPH.
45 seconds.