Speed = Distance divided by Time 1760 yards = 1 mile. 3600 seconds = 1 hour 40/1760 divided by 4.8/3600 = 17.0454545 Answer: about 17 mph TIP: put "4.8 seconds / 40 yards in mph" into google, and it will calculate it for you.
(100m/11.8s)(3600s/hr)(0.000621371192mi/m) = 18.9571mph So pretty much 19 mph.
1 yard = 1/1760 mile 1 min = 1/60 hour → 253 yd/min = 253 × (1/1760)/(1/60) mph = 253 × 60/1760 mph = 8 5/8 mph = 8.625 mph
89.51
3.11 mph is 5 kph.
A 5.7 second 40 yard dash is roughly equivalent to maintaining a pace of about 11 mph.
22.7 mph
12.5 seconds in the 100 yard dash is a pace of 16.36 mph
A pace of 18.6 mph is required.
61.7 MPH on the 40 yard dash and a 1:34 mile
Running 40 yards in 4.2 seconds is equal to running 19.5 MPH.
Denard Robinson can run a 40 yard dash in 4.23 seconds, by this we can gather he runs 28.4 ft/s so if you do the math correctly he can run just about 19.4 MPH.
7.2 seconds in the 55 meters converts to 4.788 seconds in the 40-yard dash.
19.2839 mph
To convert a time in seconds to miles per hour, you first need to convert the distance to miles. 40 yards is approximately 0.02273 miles. Then, you can calculate the speed by dividing the distance by the time in hours. For 4.3 seconds over 40 yards, the speed is approximately 1.25 mph.
That would be about 27.91 ft/sec and thus 19 mph
40 mph = about 58.6 feet per second.