Relative Velocity: A plane has an airspeed of 142 m/s. A 30.0 m/s wind is blowing southward at the same time as the plane is flying. What must be the heading of the plane in order to move directly eastward relative to the ground?
A. 78.1° north of east
B. 11.9° north of east
C. 77.8° north of east
D. 12.2° north of east
E. 55.3° north of east
Answer: D
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