the number of molecules changes
In the game of Basketball, you dribble (bounce) the ball, and it is important that the basketball bounce back up to nearly the height from which you dropped it. The height at which something bounces back is proportional the coefficient of restitution, and that coefficient is higher, among other things, when there is greater air pressure inside the ball. Therefore a basketball has higher air pressure, to give it a higher coefficient of restitution, which makes it bounce better.
The greater the air pressure, the harder the ball feels when it hits you. That is why getting hit on the side of the head with a thrown basketball can really hurt. A beach ball does not have to bounce, and it should not hurt you when it hits you. For that reason, beach balls have lower air pressure.
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that doesnt answer the question
a basketball has more pressure because it has more particles of gas in it and also since they are closer together. this causes the particles to collide with the basketball at a faster rate then a beach ball. in a beach ball there are fewer particles and farther apart making the particles hit the inside of the beach ball at a slower rate making the pressure lower than the basketball.
that question makes no sense
The pressure from the air inside of it
Yes. A full basketball with medium to high pressure will clearly bounce higher than a flat basketball with low pressure.
The temperature of a room will effect the amount a ball will rebound (bounce) off the floor, off a backboard or rim. If a basketball is filled with air to the regulation pressure and then it is moved to a room with a higher temperature, the ball will soon start to bounce more. Alternatively if you move it a cooler room it will bounce less. This is because: Pressure = Volume x Temperature. As the temperature rises (assuming there is no leak in the ball to allow the volume of air to escape) the pressure on the inside of the ball will increase, this will increase the bounce of the ball. If, instead of the temperature rising, it decreases the pressure on the inside of the ball will go down and the bounciness of the ball will go down as well.
yes
when more pressure is applied to a basketball the ball bounces higher. your strength matters. if your strong, you throw the ball on the ground with all your might it will go very high. air inside the ball also matters. if 3/4 of the ball or less is full the ball will barely bounce. in fact there are chances it will not bounce at all no matter how strong you are. you need to make sure that the ball is full of air if you want it to bounce
Sure, when the ball gets compressed, the air pressure increases. This will help drive the ball up again.
yes. higher pressure = better bounce
If you mean OUTSIDE the basketball, then no. If you mean INSIDE the basketball, then yes.
yes
yes
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.
Tennis balls have pressured air inside of them from the manufacturer. This air on days with higher temperatures will increase and expand this internalized pressure of the ball, thus making the ball more solid and hard. This increases the "bounce" of the ball. Vice versa for cold temperatures, the pressure will instead contract and have less pressure inside making it softer.