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Which effect increases when an aircraft flies at high speed near a polar front influenced by the Coriolis effect?

A)Yaw instability increases significantly.
B)Lift vector becomes almost vertical.
C)Thrust is reduced below stall speed.
D)Drag is minimized considerably lower.

💡 Explanation

Yaw instability increases because the strong horizontal pressure gradient across the polar front, coupled with rapid air movement and the Coriolis effect, produces powerful crosswinds. The resulting deflection induces yaw, therefore, instability is enhanced, rather than minimized.

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