The force exerted by the wind on a sailboat is approximately perpendicular to the sail and proportional to the component of the wind velocity perpendicular to the sail. For the 900 kg sailboat shown in Figure P4.54, the proportionality constant is given below. F(sail) = 550V(wind) Water exerts a force along the keel (bottom) of the boat that prevents it from moving sideways, as shown in the figure. Once the boat starts moving forward, water also exerts a drag force backwards on the boat, opposing the forward motion. If a 17 knot wind (1 knot = 0.514 m/s) is blowing to the east, what is the initial acceleration of the sailboat? There is a given diagram with the Force of the keel pointing west and the Force of the sail is pointing northeast with an angle of 30. The force of the sail is 4805.9 N. I was thinking that the force of the keel is negligible because the wind counters its effect. So I use the formula F=ma to solve for the acceleration. a = 4805.9 / 900 = 5.33 m/s^2 However that is inccorect. Any tips?