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Because a tennis ball is hairy, and this means that the hairs stick out from the ball and involve more water in the spinning process (as compared to a smooth ball of otherwise identical size, weight) which uses up the energy of the spinning faster.
Rubber.
It's tennis ball.
rubber and air
now rubber
A tennis ball has rubber and felt, which is stuck on with an adhesive. For logos, black ink.
rubber and green fuzzies
yes the weather effect the rubber inside
The tennis ball is made from a mixture felt-rubber; the internal gas is air.
because the tennis has more bounce in it your welcome
you can also use a big rubber ball
Under the fuzzy exterior of a tennis ball is a rubber "shell". Rubber has a natural bouncy quality, but it's the compressed air inside the rubber shell that gives it that extra bounce. If you ever heat up a screwdriver and push it through the tennis ball, you should hear the air hissing out, or whooshing out in some circumstances. Hope this helped, Chris