That video helped a lot. I was getting hopelessly lost with the image. In one part the object is moving in still or slow air where the resistance isn't enough t

That video helped a lot. I was getting hopelessly lost with the image. In one part the object is moving in still or slow air where the resistance isn't enough to nullify the gain gained at the higher speed upper layer if I'm understanding this correctly. And finally learned the difference between airspeed vs. groundspeed :D