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Question 46 (1 point) Listen If OA = [7, 0. -1] and OB = [0, 4. 1], find the magnitude of AB : O V65 13 O V68 Question 47 (1 point) Listen An airplane heads due south with an air speed of 800 km/h. Measurements made from the ground indicate that the plane's ground speed is 951 km/h at 18: east of south. Find the wind speed. 300 km/h 312 km/h 514 km/h 156 km/h Question 48 (1 point) Listen The magnitude of the vectors u and ware 8 and 13 respectively, and the angle between them is 39%- Calculate U . v : 1.02 1.26 O 45.45 80.82