A subsonic airplane is flying at a 5000-m altitude where the atmospheric conditions are 54 kPa and

Question:

A subsonic airplane is flying at a 5000-m altitude where the atmospheric conditions are 54 kPa and 256 K. A Pitot static probe measures the difference between the static and stagnation pressures to be 16 kPa. Calculate the speed of the airplane and the flight Mach number.