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Which consequence arises when incompressible airflow near a racing car exceeds the critical Mach number?

A)Symmetric laminar flow is maintained
B)Lift increases proportionally overall
C)Drag increases sharply overall
D)Rolling resistance is significantly lowered

💡 Explanation

Shock waves form due to Compressibility, creating a local pressure increase, and thus, an increase in drag overall. Because this wave drag becomes significant, therefore overall drag increases sharply, rather than remaining constant as the Reynolds number shifts.

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