Please Help!! How am i supposed to determine the speed of air?? I need it for Bernoulli's Equation, see i built a glider and i have to present on Wednesday, and i want to show that i did at least one calculation. As if things weren't bad enough already i have to figure out two velocities, one of the speed underneath the wing and the other of the velocity on top of the wing. how do i do it?? I was thinking that maybe the velocity of the air over the wing is the whole glider's velocity which would be really easy to calculate. and perhaps the velocity of the air underneath the wing would be the air's velocity at that time. (i can probably get it online at a weather website) Anyone have any suggestions?? R.S.V.P.!!! This is driving me nuts!