how does air pressure help to inflate a football in physics....???Pls don't histories and mains of football... ( In PHYSICS)!!!
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The NFL requires that all game footballs be inflated to a pressure between 12.5 and 13.5 pounds per square inch (psi), and that they weigh 14 to 15 ounces (397 to 425 grams), ESPN reported. The footballs in the playoff game were underinflated by 2 psi
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