Stunt pilots and tighter pilots who fly at high speeds in a downward-curving arc may experience a \"red out," in which blood is forced upward into the flier's head, potentially swelling or breaking capillaries in the eyes and leading to a reddening of vision and even loss of consciousness. This effect can occur when the non-gravitational part of the centripetal acceleration exceeds 259's. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Qynamics of a Ferris wheel ride. v PartA For a stunt plane flying at a speed of 410 km/h, what is the minimum radius of downward curve a pilot can achieve without experiencing a red out at the top of the arc? (Hint Remember that gravity provides part of the centripetal acceleration at the top of the arc; it's the acceleration required in excess of gravitythat causes this problem.) Express your answer with the appropriate units. w Previous Answers muest Answer 3' Incorrect; Try Again; 4 attempts remaining