I have a question that I'm having trouble figuring out on my APY2 Physics homework. It reads as follows: The wind blows with a speed of 31.9 m/s...

Hey! I have a question that I'm having trouble figuring out on my APY2 Physics homework. It reads as follows:

The wind blows with a speed of 31.9 m/s over the roof of your house. Assuming the air inside the house is relatively stagnant, what is the pressure difference at the roof between the inside air and the outside air? Answer in units of Pa. What net force does this pressure difference produce on a roof having an area of 155 m^2 ? Answer in units of N.