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F = ma (11–17)
Dimensional Analysis
FMA-2018B-16 · 2018B F = ma (AAPT)

2018 F = ma Exam B — Question 16

A plane can fly by tilting the trailing edge of the wings downward by a small angle θ, called the angle of attack. In still air, a plane with ground speed v will have a lift force proportional to v2θ and a drag force is proportional to v2. Consider a plane initially in level flight in still air with constant ground speed v. If the plane enters a region with a tailwind with speed w < v (the wind is
Source: Question 16, 2018 F = ma Exam B, © 2018 American Association of Physics Teachers (AAPT) and the U.S. Physics Team. Adapted by PhysicsTrainer: reformatted into a separate question and answer choices for online multiple-choice practice; any shared setup from nearby questions is repeated here. Not affiliated with or endorsed by AAPT or the U.S. Physics Team.