Multiple choice

Mach number is used in connection with the speed of

  1. sound

  2. ship

  3. satellite

  4. aircraft
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mach number is the ratio of an object's speed to the speed of sound in the surrounding medium. It is primarily used in aerodynamics to characterize aircraft speeds, especially at high velocities where compressibility effects become significant. Subsonic (<1), transonic (~1), and supersonic (>1) regimes are critical in aircraft design.

Keep practicing — related questions