The afternoon is waning by the time we land and I start the 45-minute drive home. I should be tired. I've been concentrating hard, and even sweating a little, for an hour and a half. But strangely enough, I feel energized, just like I do after a good gym workout. What would Sir Newton have to say about that? I don't really expect him to have an answer, but when I get home I go online anyway, just to see. And there, right in front of my eyes, is a surprising answer. Newton's second and third laws of motion, it turns out, focus on the reciprocal nature of force and change. A change in velocity generates a force, just as a force can generate a change in velocity. And acting on an object creates an equal reaction in return. So … in other words, in the process of getting my airplane back in motion, one could say (granting only a tad of creative license here) that a force inside me gets recharged, as well. And at the same time as I'm having an impact on my airplane, my airplane is having an impact on me. I may be the only living, breathing object in this particular equation, but Newton was right. The Cheetah and I are still inextricably connected when we fly. And the actions of each of us most certainly impact the other - in more ways than one.