4.23 was his fastest
Forty (40) yards.
A 6.8 second 60-yard equates to a 4.53 second 40-yard.
4.28
He ran the forty yard dash in 2.2 seconds.
4.6
answer 6.21
4.2 flat
About 3.4 sec.
Bo Jackson 4.18
Chris Johnson. 4.24.
Really Fast!!
One yard is 36 inches. So, forty inches is 1 1/9 yards.