Multiple choice general knowledge science & technology

The Concorde airplane flies faster than Mach 1. Mach 1 is

  1. Helped by sonic booms

  2. A constant no

  3. The speed of sound

  4. A jet car

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mach 1 is the speed of sound in the surrounding medium, approximately 343 meters per second in air at sea level. Anything traveling at Mach 1 is moving at the speed of sound, while Mach 2 is twice the speed of sound. The Concorde routinely flew at speeds greater than Mach 1, making it a supersonic aircraft.