My math is correct.
https://sports.yahoo.com/image-noah-lyles-winning-100-005522747.html
https://www.nbcnewyork.com/paris-2024-summer-olympics/noah-lyles-100m-final-photos-finish-line/5669315/
They are running a little bit faster than 10 meters/second. There are 100 cm in each meter. They are running about 1000 cm every second.
1000cm/s times .005 seconds equals 5cm.
5cm is about 1.9 inches. Look at the photo finish on yahoo.com