Why do you fall from 100 meters? It is said that eggs will kill people, but football won't?

This problem is related to the specific gravity of the object, the resistance and acceleration of the air. Imagine that an egg is a solid with a specific gravity greater than 1. When falling from 100 meters, its acceleration is 9.8 m s 2, and its kinetic energy is large enough to cause death. Football is hollow and has a small specific gravity (depending on the weight of the football skin). The air resistance of football falling from a height of 100 meters is much greater than that of eggs, so its acceleration is very small, so football falling from a height of 100 meters will not kill people.