Asked in ToysPhysicsKinematics
What makes a bouncy ball bounce?
February 29, 2012 5:03PM
This is due to the elastic properties of the polymer that makes up the ball.
As the ball hits the surface, it compresses under strain (but only to a certain point). The residual strength of the structure of the ball eventually overcomes the initial downward force to spring back to it normal shape. This causes the ball to rebound from the surface.
It will not bounce as high as the start point as energy is lost into to sound and heat.