Approximately 720 miles per hour
The sound barrier was first broken on October 14th, 1947.
I don't believe anyone has broken the sound barrier on land yet.
its simple the sound barrier is broken :D
the speed of sound at sea level :)
Yes, depending on which aircraft you have but there is no indication that you have broken the sound barrier unfortunately.
To the best of my knowledge, the sound barrier has never been broken by an automobile.
With a whip...
Exceeding the sound barrier refers to speed of travel, not loudness of sound. A speaker cannot "exceed the sound barrier".
The sound barrier
You break the sound barrier by moving at a speed that is faster than the speed that sound travels. In dry air, sound moves 768 mph which about 1 mile in 5 sec.
sound barrier
Well it creates a sonic boom.