Angle of elevation (for object following a ballistic trajectory)

Description

A trajectory or flight path is the path that a moving object follows through space as a function of time. A trajectory can be described mathematically either by the geometry of the path, or as the position of the object over time. For a required range the angle of projectile launch ( the angle at which a projectile must be launched in order to go a distance , given the initial velocity) is related to the range and the initial velocity).