An airplane is traveling from New York to Paris, a distance of 5.80 × 103 km. Ignore the curvature of the Earth.
(a) If the cruising speed of the airplane is 350.0 km/h, how much time will it take for the airplane to make the round-trip on a calm day?
(b) If a steady wind blows from New York to Paris at 60.0 km/h, how much time will the round-trip take?
(c) How much time will it take if there is a crosswind of 60.0 km/h?