Originally Posted by
Dont Hang Up
gH = 1/2 x (V^2) where V is the speed change and H is the height change
So in metric units V=SQRT(2 x 9.8 x 914)
V=133 metres per second (approx 260 Knots decrease)
Hmm, I'm afraid you've got a little quirk in your calc.
Energy loss is 1/2 (V1^2 - v2^2) which is quite a different thing from 1/2 (v1 - v2)^2.
You might want to recalculate with the adapted formula and will then come to the conclusion which has been accepted here that the energy transformation matched quite OK.