Supersonic planes fly
- Awith a speed less than the speed of sound.
- Bwith the speed of sound.
- Cwith a speed greater than the speed of sound.
- Dwith the speed of light.
Solution & Step-by-step Explanation
Supersonic speed refers to a rate of travel that exceeds the speed of sound. Therefore, supersonic planes fly with a speed greater than the speed of sound (Mach number ).