Jugglers know that if you throw a ball, a bean bag, or a pin into the air, it will follow a curved path. This curve is what naturally happens when an object can move in two dimensions—horizontal and vertical—at the same time. As the ball moves horizontally, gravity pulls down. Physicists call this projectile motion. In this unit, students will learn why any projectile, no matter if thrown, shot, or launched, will follow a curved path while in the air.
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