IdentityCrisis
New member
If you bounce a ball it slowly begins to lower with each bounce. Why? If you took out the air, kept the gravity, and bounced it, would it keep bouncing indefinitely?
First. Two cars crash into eachother because they can. Same reason a ball flattens when it hits the ground. It just bounces back because of a thing called 'elasticity'.
Second. Gravity wouldn't stop it alone because it would pull the ball down. Newton's law states that for every action there is an equal and opposite reaction. Therefore the ball would bounce equally as far away each time because the gravity would be pulling on it the same amount each time (gravity doesn't change, people). Without air slowing it as it moves up and as it moves down again, wouldn't it just keep going?
Third, how does friction come into play? Isn't friction when two things move PAST eachother, not INTO eachother?
First. Two cars crash into eachother because they can. Same reason a ball flattens when it hits the ground. It just bounces back because of a thing called 'elasticity'.
Second. Gravity wouldn't stop it alone because it would pull the ball down. Newton's law states that for every action there is an equal and opposite reaction. Therefore the ball would bounce equally as far away each time because the gravity would be pulling on it the same amount each time (gravity doesn't change, people). Without air slowing it as it moves up and as it moves down again, wouldn't it just keep going?
Third, how does friction come into play? Isn't friction when two things move PAST eachother, not INTO eachother?