New tennis balls are considered fresh and not "flat". Old tennis balls exposed to play and air become flat and do not perform normally in a match.
6 new balls at each change over.
Tennis balls bounce because the air pressure inside is higher than the outside pressure. They begin to lose bounce as soon as removed from their pressure can. The alititude where the ball is played will affect the bounce. As they are played, they lose more bounce. Typically, they lose too much bounce to play after about 3 sets of recreational (amateur) tennis, or 8 games of professional tennis.
New tennis balls bounce higher than old tennis balls because they have more elasticity and air pressure which allows them to compress and decompress more easily upon impact with the ground. As tennis balls are used, the felt covering wears out and the air inside the ball escapes, leading to less bounce.
They improved them a lot! If your question would be more specific, it would be easier to answer. The tennis balls used to be wads of hair or wool wrapped in stuff, but now they are more rubbery for bounce. I don't know exactly how.
65 / x = b
The US Open is, as always, at the National Tennis Center in New York, NY.
Yes its called Mario power tennis
A new tennis ball will bounce higher. Old tennis balls are considered "dead."
Tennis balls bounce higher depending on factors like their internal pressure, felt quality, and core material. New balls with higher pressure and less wear will bounce higher compared to older balls with lower pressure and more wear. The type of surface and conditions where the ball is being used can also affect its bounce height.
Flushing Meadows, New York.
When it finishes or when you are versing a new person.