The world record for the women's 100 m dash was set by Flo Jo (Florence Griffiths-Joyner) in 1988. During the race she generated 2,590 J of energy and ran a velocity of 9.53 m/s. What
was her mass?

Florence Griffith-Joyner recorded a time 10.61 seconds (wind reading +1.2) in the final at the 1988 U.S. Olympic Trials the wind reading for this race is not in doubt, and the performance should be the official IAAF women's 100-m world record

This is what a calorimeter is used for simpler ex, to measure calories in food.