About 3.4 sec.
Usain Bolt's current 4o yard dash time is 3.97.
0.0004- just joking its 3.53
This belongs to Asafa, who has a superb start.
Usain bolt runs his 40 yard dash in around 4.2 seconds.
11.37 . About 1 1/2 seconds slower than usain bolt
The 100y is rarely run outside the US, however, it is likely that Bolt will have passed the 100y mark in his best 100m race in around 8.75s.
He ran the forty yard dash in 2.2 seconds.
4.28
The fastest record speed attained by a human on foot is 27.44 miles per hour. This speed was attained by Usain Bolt in the 100 yard dash.
4.6
answer 6.21
4.2 flat