An Airplane Flies 120 Km at a Constant Altitude in a Direction

Multiple Choice

An airplane flies 120 km at a constant altitude in a direction 30.0° north of east. A wind is blowing that results in a net horizontal force on the plane due to the air of 2.40 kN in a direction 10.0° south of west. How much work is done on the plane by the air?

A) -2.71 × 10⁸ J
B) -0.985 × 10⁸ J
C) -221 × 10⁸ J
D) 221 × 10⁸ J
E) 0.821 × 10⁸ J