1. Airplane six degree of freedom (6DOF) forces and moments are a. Pitching force, yawing moment, lift force, side force, drag force, and rolling moment b. Pitching moment, yawing moment, lift force, side moment, drag force, and rolling force c. Pitching moment, yawing moment, lift force, side force, drag force, and rolling moment 2. When adding the fuselage to the wing, the aerodynamic center shifts backward a. True b. False 3. The downwash effect is measured as a gradient function of the lift force a. True b. False 4. The wing twist angle a. Provides a tilt in the wing against the fuselage to help maintain straight and level flight b. Is the angle that the tip chord makes against the root chord c. Is the angle of attack 5. The aerodynamic center is a. Located on the mean geometric chord b. Located on the tip chord c. Located on the root chord