Answer to Question #249379 in Mechanics | Relativity for gm123

Question

how to measure the maximum kinetic energy of someone sprinting 100 metres?

Answer 1

The maximum kinetic energy is

$$K_\text{max}=\frac12mv^2_\text{max}.$$

As we see from the equation, the kinetic energy is maximum when the speed is maximum. So, you need to know the maximum speed of the sprinter during the 100 m.