post #2 states "some" basic physics but is not the correct formula to explain why a heavier object has more kinetic energy than a lighter one at a given speed and drag.
F/M is that some code to describe movies of a certain type. certainly not a formula or basic aerodynamics of any kind.
I look forwards to your explanations and analogies of why a heavier aircraft below Vmd slows down quicker than a lighter aircraft.
GB