Observe how the ball deforms as it hits the ground. When are the elastic forces at their maximum?

The force of elasticity of the ball when falling to the ground is maximum from the moment of impact to the moment of rebound.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.