# Dynamics: Projectile Motion

Projectile motion is the study of how an object moves through the air. A projectile motion problem can be thought of as a 2 dimensional problem with motion in the horizontal direction (x direction) and motion in the vertical direction (y direction). For the horizontal direction the velocity would be constant and that would be used to calculate the position in that direction However, for the vertical direction there is a constant acceleration due to gravity. Which means the gravitational acceleration also has to be considered in the equations to calculate position and velocity. The gravitational constant in SI units is 9.81 m/s^2, while for British-American units it would be 32.2 ft/s^2. To view a general example of projectile motion refer to the example below.

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