FRICTION
Friction is the surface resistance that is relative to movement or when two objects are rubbing together. Friction is also represented sometimes by little microscopic bumps that the human eye cannot see but affect the movement. This slows objects down or may change the direction them when they are moving. Generally if an object has more mass it pushes down on the ground more so it will be harder to move and slow down. This is what happens when you throw a baseball the laces act as the little bumps and they catch the air which makes the ball move slower but it also makes the ball change direction. This is used to throw off a batter who is not expecting the ball to change flight paths like that. The more the ball spins the more surface area the balls laces has to catch the air.
1. What causes the ball to move and change speed while in the air?
The Change in surface area of the laces touching the air
2. what speed would be the best to throw the ball at if the pitcher was snapping his wrist at 10mph? 60mph, 70mph, or 80mph? and Explain?
60mph because the ball is going slower which means it will have more time for the laces to catch the air
The Change in surface area of the laces touching the air
2. what speed would be the best to throw the ball at if the pitcher was snapping his wrist at 10mph? 60mph, 70mph, or 80mph? and Explain?
60mph because the ball is going slower which means it will have more time for the laces to catch the air