Question 1
An aeroplane must maintain a ground velocity of 500 mph due south, bearing 180°. Wind blows at 100 mph FROM southeast, bearing 135°. What airspeed and heading are required? AI reconstruction: use horizontal vector addition; round the required airspeed to the nearest 25 mph and heading to the nearest 10° to choose a listed approximation. Bearings are clockwise from north. SOUTH = nam; WIND = gió; SE = đông nam.
