On the physics behind speed vs. lift vs. kinetic energy
I'm making a presentation for new students on the subject "aircraft"... and was wondering about the equation we all use, or at least know..
If you double the speed, you'll quadruple the lift and drag.
It's also well established that if you double the speed, you'll quadruple the kinetic energy.
I simply don't remember, can we agree that lift/drag and kinetic energy is directly related in these equations? Meaning lift and drag are equal kinetic energy, so if you double the kinetic energy, you'll double the lift/drag.... guess I just answered my own question...
I was thinking as presenting it as a formula for speed vs. kinetic energy (the one we all leaned many moons ago in high school) and then relate that to lift/drag, and hopefully help the youngsters (who are closer to physics lessons in high school than I) understand why.