More like 3 and 2 seconds, respectively.
Let's say these numbers are correct (they aren't). Reaching 34 km/h in 3 resp. 2 seconds. And make it as simple as possible.
Acceleration (constant)
Araujo: 3.15 m/s^2
Dembele: 4.72 m/s^2
Let's say they sprint for 3 seconds (the time it takes for Araujo to get to full speed), how far ahead will Dembele be if they start from standing still?
Dembele will have reached top speed after 2 seconds and sprints at full speed for a full second.
Distance
Araujo: 14 m
Dembele: 19 m
By the time Araujo longlegs has gotten his engine going, Dembele will already be 5 meters ahead of him.