when a ball is allowed to bounce each bounce becomes smaller, is this an exception to the law of conservation?

Question

could u explain please !!

Answer 1

no, some of the energy from the bounce is being converted to heat, it's the same with an mechanical system, no system is 100% percent efficient, so everything runs down and turns to heat eventually (mostly from internal and external friction).

Besides, the momentum is still conserved as a system, which includes the earth, since it is just too massive compared to the ball. You just can't measure the movement of the earth caused the ball. So either way you look at it, both energy and momentum is being conserved.

Answer 2

The Conservation laws applies only to a conservative system .
In the case of the bouncing ball. its not a conservative system because the ball is not a perfectly elastic mass structure. Hence not a conservative system.

As the ball is dropped to the floor it deforms , as it deforms ,heat energy is lost in the form of mass loss.
Therefore the second time the ball falls on the floor it moves with less energy and as it returns from the bounce less and less energy remains till the ball comes to a stop on the floor.
IN this case energy is not conserved but its lost to the surroundings.
This energy loss is called entropy.

Its very vely simple