lacamu·14 anni fa·discussHell, it's the 21st century now, I'll use Google:"700 foot-pounds = 9.49072564 × 109 ergs"Somehow I don't think that helps. Are you happy now?
lacamu·14 anni fa·discussOK, I guess I wouldn't mind having dropped on my head a 4.4 pound drone traveling, hmm, approximately:sqrt(2gdistance) = Sqrt(232.3(400 feet)) = 160 f.p.s.with about 160 fps * 4.4lbs = 700 ft-lb of energy!!! Well, maybe not!
"700 foot-pounds = 9.49072564 × 109 ergs"
Somehow I don't think that helps. Are you happy now?