This document discusses projectile motion and provides equations to model the motion. It states that: 1) The motion of a projectile can be thought of as the combination of horizontal and vertical motions, which act independently. 2) The equation of motion for the horizontal direction is x = ut cosθ, where u is the initial velocity and θ is the launch angle. 3) The equation of motion for the vertical direction is y = utsinθ - 1/2gt^2. 4) Combining the horizontal and vertical equations yields the equation of the projectile path, which is a parabola.