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← ScienceWhich 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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