The speeds of air-flow on the upper and lower surfaces of a wing of an aeroplane are v_(1) and v_(2) respectively. It A is the cross-sectional area of the wing and 'rho' is the density of air, then the upward lift is

The speeds of air-flow on the upper and lower surfaces of a wing of an

1.	The speeds of air-flow on the upper and lower surfaces of a wing of an aeroplane are v_(1) and v_(2) respectively. It A is the cross-sectional area of the wing and 'rho' is the density of air, then the upward lift is
Answer» `1//2rhoA(V_(1)-V_(2))` `1//2rhoA(V_(1)+V_(2))` `1//2rhoA(V_(1)^(2)-V_(2)^(2))` `1//2rhoA(V_(1)^(2)+V_(2)^(2))` ANSWER :C