Vertical Trajectory Calculation for Quadratic Drag of form -cv^{2}

Notes: This is not as practical a calculation form as the calculation for a sphere in air, but could be useful for obtaining an effective drag coefficient. If we were to model the trajectory of a 100 gram spherical rock of radius 2cm (density about 3000 kg/m^{3} or specific gravity 3) through air with density 1.29 kg/m^{3}, that alternate form of the calculation would lead to a drag coefficient c = .0004 Ns^{2}/m^{2}. If you leave the values of c and radius at zero, they will default to the values for this rock. That will give you an example which you could then compare to the sphere calculation.