Baseball, America's Favoite Pastime and a breeding ground for physics.
This video explains the differences between a fastball and a curveball including why a curveball moves and why it is so much slower. The curveball and fastball are almost exactly opposite. A curveball drops alot and a fastball doesn't. A curveball is slow and a "heater" is fast due to the momentum of the pichers wind up witch cause the ball to move faster because the pitcher makes it so the most heavy part of his body is in front of him and hits the ground first. A fastball is straight and a curveball is like a hook and this is due to magnus force which causes the ball to to moe in the direction it is spining due to air flow.
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