Drones With an Eye on the Public Cleared to Fly 14 years ago
Hell, 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?
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lacamu
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Drones With an Eye on the Public Cleared to Fly 14 years ago
OK, 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!