How does a boy run 200 meters in 40 seconds with a weight 550N?

A boy can run 200 meters in 40 seconds by maintaining an average speed of 5 meters per second, which can be achieved through proper training and technique. The weight of 550N indicates his gravitational force, which does not directly affect his running speed, but may influence his stamina and energy expenditure. Factors such as running form, ground reaction forces, and overall fitness level play significant roles in his ability to sustain this pace. With the right conditions, including a good surface and optimal weather, he can complete the distance in the given time.