What was Burrell’s mass? (physics)

In 1994, Leroy Burrell of the United States set what was then a new world record for the men’s 100 m run. He ran the 1.00 × 10^2 m distance in 8.55 s. Assuming that he ran with a constant speed equal to his average speed, and his kinetic energy was 2.95 × 10^3 J, what was Burrell’s mass?