Como se conserva la energia mecanica del cuerpo de un deportista

the energy  food has is transformed into mechanical energy during exercise,

Explanation:

When a person is exercising, the energy accumulated in food is transformed into mechanical energy, in general if he is running in kinetic energy and if he is rising and falling in potential energy.

In this case the energy  food has is transformed into mechanical energy during exercise,

c. magnitude and direction

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.