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Projectile motion is a commonly observed physics concept, as it can be seen when any object leaves the ground and only has the force of gravity acting on it. Examples include throwing a ball, shooting a gun, or firing a cannon.

There two important features of projectile motion and this the angle of release and height of release. Angle of release and height of release work together to determine how far a projectile will travel. In order for a projectile to travel it's maximum horizontal distance, as the height of release increases, the angle of release must decrease, and vice versa.

The optimum angle of release for a projectile whose height of release equals the height of where the projectile will land is 45 degrees. This means the projectiles initial velocity is equally split into horizontal and vertical velocity.

Isn't projectile motion amazing?!