Dolan's Cadillac2009

Dolan:
In his experimental law of impacts, Sir Isaac Newton describes something called the arc of descent. It's all about kinetics, mass, velocity, the inertia of falling persons and things. Once a descending object acquires a certain momentum, it continues on a downward parabolic curve to eventually impact with an immovable object at the nadir, the bottom, thereby consummating the arc of descent.