As an airplane flying with constant velocity moves from a cold air mass into a warm air mass, how does the Mach number change?
A. It increases
B. It remains the same
C. It decreases
D. It randomly varies
Answer:C
As an airplane flying with constant velocity moves from a cold air mass into a warm air mass, how does the Mach number change?
A. It increases B. It remains the same C. It decreases D. It randomly varies