Running a 40-yard dash in 4.2 seconds equates to a pace of 19.48 miles per hour.
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.
13.4 miles per hour.
22.7 mph
4.5 seconds in the 40-yard dash is a pace of 18.18 mph
12.5 seconds in the 100 yard dash is a pace of 16.36 mph
Completing a 220 yard dash in 27 seconds equates to a pace of 16.7 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
That would be about 27.91 ft/sec and thus 19 mph