An object moving with a speed greater than the speed of sound is said to move with a supersonic speed.
Related Posts:
Velocity and Acceleration in Cartesian Coordinate System Velocity and Acceleration in Polar Coordinate System 
MPH to Mach Speed Converter 
Pingback: Sound Waves Defination meaning and types - StudySaga.in
Pingback: Reflection and Refraction of Sound Waves. - StudySaga.in