CIRCUS SCIENCE
'(<a href="http://www.j-archive.com/media/2007-12-10_DJ_20.jpg" target="_blank">Jimmy of the Clue Crew watches some trapeze artists rehearse at Circus Center in San Francisco, CA.</a>)  At the start of the trick, the trapeze artist has maximized her P.E., this; at <a href="http://www.j-archive.com/media/2007-12-10_DJ_20a.jpg" target="_blank">the moment of the catch</a>, she wants to maximize it again so she's not moving'
potential energy