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11.25 seconds
9.58s for men and 10.49s for women.
Three seconds on the 100m dash!
Usain Bolt with 9.58s
Florence Griffiths-Joyner with 10.49s.
13 - 13.5 seconds
Gail Devers, 10.82 sec
A 4.48 40 equates to a time of 12.248 seconds for the 100m
22 mph = 9,78 m/s 100 m dash time = 100/9,78 = 10,22 s Answer: the time would be 10,22 s, with a average velocity of 22 mph.
2 and more up to 4
Florence Griffith-Joyner holds the women's world record in the 100 meter dash at 10.49 seconds set in 1988.
10.7 100 meter dash = 9.78 100 yards