funny this should come up...
I was talking about this today with my F/O (long flight, time to kill) and I really liked his version (Riddle Kid, not his fault...). He came at it from the "Potential Energy" side, more mass at altitude has more potential energy, as opposed to the momentum side, which is a little different. Because you are swapping more potential energy for kinetic (speed) you need more time to do it in... can also be explained in terms of AoA, as above, but I preferred this version.
Yellow