Air pressure

soccer_kings_93 · Post by **soccer_kings_93** » Wed Mar 07, 2007 8:43 pm

Does the air of the soccer ball effect how far the ball travels?

sanasalman · Post by **sanasalman** » Wed Mar 07, 2007 8:58 pm

First: Is this your science fair quesiton?

Second: Research this, you tell us, do YOU think how much a ball waighs or how much air it has depends on how far it goes, what do you think? What do you think: Which basket ball would bounce higher? One that needs air pumped into it or a ball that has plaenty of air pumped into it? New to this, so hope that helped in some way

sanasalman · Post by **sanasalman** » Wed Mar 07, 2007 9:00 pm

Research this, you tell us, do YOU think how much a ball weighs or how much air it has depends on how far it goes? What do you think: Which basket ball would bounce higher? One that needs air pumped into it or a ball that has plenty of air pumped into it? New to this, so hope that helped in some way

soccer_kings_93 · Post by **soccer_kings_93** » Wed Mar 07, 2007 9:34 pm

[quote="sanasalman"]Research this, you tell us, do YOU think how much a ball weighs or how much air it has depends on how far it goes? What do you think: Which basket ball would bounce higher? One that needs air pumped into it or a ball that has plenty of air pumped into it? New to this, so hope that helped in some way

[/quote]

yes....it is my question...my science teacher said we need to talk to an expert through science buddies ask them questions to help get research notes together..yes...a ball with higher air pressure would be better but i need a little more info..like why does it go father with air? and would it reach a certain distance with few air or none at all depending on the force of the kick?

soccer_kings_93 · Post by **soccer_kings_93** » Wed Mar 07, 2007 9:53 pm

yes....it is my question...my science teacher said we need to talk to an expert through science buddies ask them questions to help get research notes together..yes...a ball with higher air pressure would be better but i need a little more info..like why does it go father with air? and would it reach a certain distance with few air or none at all depending on the force of the kick?

deleted-71588 · Post by **deleted-71588** » Thu Mar 08, 2007 5:52 am

Ever dribbled an under and over inflated basket ball? What happens?
What happens to the size of a balloon when you let air out of it?
What happens to the size of a balloon when you put it in a refrigerator?
What happens to the size of a balloon when you heat it up with a hair dryer?
How does pressure inside a ball affect the force required to warp or flatten or dent the side with your finger or foot?
If you have a video camera and video tape recorder, try taking some high speed close ups of somebody kicking a balloon to see the dynamics of how the surface deforms and springs back.
Now what are the physic principles you've seen or experienced?

Try out these ideas and and think of some others yourself and see if you can put together all of the things that you can think of that might be related to inflation. You've already thought of weight; however, it is probably best to translate this into mass.

You then should start thinking about what other factors that influnce how far a "kicked" ball travels and how to control them (eliminate their effects from your experiment).

As far as weighing a ball, in order to determine its mass, there are some non-trivial bouyancy issues involved. Air and water are both fluids. Put a ball in water and it probably floats. Put a ball in air and it probably sinks. Either way, there is boyancy. Does the ball weigh more or less than the fluid it is displacing and by how much? That is what a balance scale measures. So there are some correction factors involved in converting this bouyant weight difference into mass.

Read the recent "Baking soda and vinegar" thread for some bouyancy discussions and references.

hopeless_in_science · Post by **hopeless_in_science** » Thu Mar 08, 2007 5:06 pm

hi irene

Air pressure

Air pressure

HELP?!