When a rubber ball is bounced, its molecular structure causes it to compress, but it cannot equalize the pressure by expanding on the other side, so the pent-up energy is rapidly used by decompressing the ball which causes the bounce.
because they are made to bounce
They are hollow rubber balls. Hope this helps!
Because balls are made of rubber, and dogs are not.
They don't.
To make them bounce.
Well, cold rubber balls do bounce, but warm rubber balls bounce better because when a cold rubber ball hits the floor, it generates heat instead of a rebound effect because the molecules are so close together that they collide with each other.
Modern tennis balls are made of a hollow rubber core, covered in a wool or nylon shell which is known as the nap. Pressurised air inside the rubber core makes the ball bounce.
Rubber helps Tennis Balls bounce better. If you get the kind of tennis balls with a very solid and not hollow rubber, it won't bounce. If it's hollow it will bounce way better. How could tennis balls not bounce without rubber? Tennis balls are made of rubber because it helps it bounce. This may sound silly, but how could a tennis ball bounce without being made of rubber? Tennis balls need rubber so that when they come into contact with the ground they do not burst or crack. It will dent slightly and go back to its original form. This is an advantage to a tennis ball being made out of rubber. so it can bounce.
Gravity
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Basketballs are not at the top of the list of bouncebility (see tennis balls). SorryHowever balls bounce because they are deformed when they hit something and the rubber forces them back into a round shape which propels then off the surface they hit.The more power in the rubbers desire to maintain its shape vs the weight of the ball determines its bounce.
the gravity and force of the rubber has a slow motion part of the rubber ball will go flat and that forces the rubber ball to go up. you know what i mean?