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

question 41

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 by the air on the plane?

• A)-2.70 × 10⁸ J
• B)-0.985 × 10⁸ J
• C)-221 × 10⁸ J
• D)221 × 10⁸ J
• E)0.821 × 10⁸ J

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