Airplane One Flies Due East at 250 Km/h Relative to the Ground

Multiple Choice

Airplane One flies due east at 250 km/h relative to the ground. At the same time, Airplane Two flies 325 km/h, 35° north of east relative to the ground. What is the velocity of Airplane One relative to Airplane Two?

A) 16 km/h, due west
B) 270 km/h, due north
C) 210 km/h, 55° south of east
D) 170 km/h, 15° north of east
E) 190 km/h, 85° south of west