The sail of a sailboat acts like a wing creating both lift and drag. Because it deflects the wind horizontally

the lift is horizontal, too, and pulls the boat through the water. a.Wind blows around both sides of the sail. It bends inward,toward the sail, as it travels around the outside.How does the pressure on that side of the sail compare with atmospheric pressure? b.Air ping across the inside surface of the sail bends outward, away from the sail. How does the pressure on that side of the sail compare with atmospheric pressure? c.What is the direction of the overall force exerted on the sail by the wind? d. A sailboat has a flat keel that projects into the water and prevents the boat from tilting or drifting sideways. The keel effectively produces a straight track through the water along which the boat can move. If the wind is blowing toward the boat from north to south and the boat's sail is experiencing an eastward lift force,show that the keel can be turned so that the net force on the boat is toward the northeast. (This is how sailboats manage to sail upwind!)