ok so I got this in class and was trying to figure it out but part b didn't make sense to me and i will show why not when I get there.

65. (A) Find the pressure difference on an airplane wing if air flows over the upper surface with a speed of 115 m/s and along the bottom surface with a speed of 105 m/s. (B) If the area of the wing is 32 m^2, what is the net upward force exerted on the wing?

OK so I used Bernoulli's equation (duh) to calculate the first part going from

P1 + .5pv1^2 = P2 + .5pv2^2 w V1=115 & v2=105

then i plugged everything in trying to find change in Pressure using

1.29 kg/m^3 as density and got change in P=1419

alright, now on b i know the formula P=F/A and I know I have A but I do not understand where to get this new P for the F exerted up. My lab partners told be to just use the difference in P but that totally does not make sense and I am wondering why that would work. PLEASE HELP!!!

and thank you ahead of time!