The higher the pressure inside the ball and the more molecules there are to push against the ball interior, the stiffer the ball becomes. A ball colliding with a rigid surface deforms, increasing the air pressure around the deformed region. This additional pressure spreads through the ball interior, causing the ball to bounce off the ground.
I don't believe air pressure has any effect on a ball bouncing. Gravity on the other hand greatly effects how a ball bounces. the less gravity the more it bounces. On the other hand if you are referring to the air pressure inside of a ball that is a different story. The effect is the inverse, the lower the pressure the less the ball will bounce, where higher pressure will increase proportionatly a higher bounce to the ball.
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Gravity and air resistance is all that I got.
Gravity, and air viscosity.
Pressure in a basketball is 2 sided. First you want the ball to react well when you bounce it so you do not become fatigued bouncing the ball. Second, you want the ball to be less reactive at the rim so it will stay there longer and perhaps fall in. The normal inflation pressure is from 7 to 9 pounds. Exceeding the pressure will cause the ball to loose its shape and fail prematurely; be less playable.
The canister is actually pressurized to balance the pressure inside the container with the pressure inside the tennis balls. This will prevent the balls from going flat. The pressure inside the balls is 12 psi over the normal air pressure (for comparison, the pressure in a car tire might be something like 32 psi). The rubber shell of a tennis ball isn't enough by itself to keep the ball bouncing high, so the pressurized air inside the ball makes it springier. Even though the rubber shell may seem impermeable to air, it isn't. It slowly lets out air until the pressure inside the ball equals the air pressure around it. The pressurized can prevents this from happening until it's opened.
Air doesn't effect the bounce of the ball much higher air pressure the harder the ball lower pressure softer the ball temp effects it too colder soft warmer harder
If a soccer ball that is otherwise able to hold its pressure fairly well is heated by the sun, it will, indeed, increase its pressure. Thermal energy is transferred to the air (which is already compressed) inside the ball, and it causes the gas atoms and molecules to increase their thermal energy. This thermal energy causes increased vibration and increased "bouncing around" among the heated gas particles. The increased kinetic energy added to the air by the heat of the sun has increased the pressure in the ball.
Newton's third law states that for every action there is an equal and opposite reaction. So technically, all of the above, though a bouncing ball is the most obvious "reaction". However, even with sitting in a chair, the body and chair react to each other.
Sure, when the ball gets compressed, the air pressure increases. This will help drive the ball up again.
7.5 PSI.
Gas particles travel from an area of higher pressure to lower pressure when air leaks out of an inflated ball.