'(<a href="http://www.j-archive.com/media/2009-07-13_DJ_13.wmv">Jimmy of the clue tries to crack a whip.</a>)  Like a jet plane traveling faster than mach 1, a whip makes a cracking noise because it's traveling faster than the speed of this'
sound
SCIENCE: Like a jet plane traveling faster than mach 1, a whip makes a cracking noise because its traveling faster than the speed of this
Like a jet plane traveling faster than mach 1, a whip makes a cracking noise because it's traveling faster than the speed of this
Like a jet plane traveling faster than mach 1, a whip makes a cracking noise because it's traveling faster than the speed of this
SCIENCE
sound
SCIENCE