Hockey
The type of air that keeps a beach ball inflated is kinetic energy.
Water polo and water volleyball are sports played with a ball in a pool.
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If it is a solid rubber ball it is not inflated. A hollow ball can be inflated. The more pressure inside, the "harder" the ball will be and the higher it will bounce. To much pressure and you risk rupturing the "rubber" bladder.
well you can get a hallow ball no holes attach a fuse fill the hallow ball with gun powder
The sports more played in Armenia are:chess,football,volley ball,weight lifting,and gymnastics.
volly ball
The impression I got is that it is a big hallow glass ball.
Me i have played basket ball while playing football
When air leaks out of an inflated ball, gas particles within the ball escape through the opening. The pressure inside the ball decreases as more gas particles leave, causing the ball to gradually deflate.
to check if a basketball or any ball is inflated properly, the referee must bounce the ball on the floor to see if it comes back up to a appropriate height for the players. :)
they played stool ball