Sandhya Dirks en In Iowa, The Physics Of Politics Both campaigns want to claim momentum heading into the final days of the campaign. This is especially true in battleground states like Iowa, where enthusiasm and voter turnout can make all the difference.<p>It's a common political metaphor — momentum — but is it a good one?<p>Iowa State University physicist John Hauptman knows a thing or two about momentum: "Take an object. It's the mass of that object times it's velocity," Hauptman tells <a href="" target="_blank">Iowa Public Radio</a>. Sun, 04 Nov 2012 00:46:16 +0000 Sandhya Dirks 6965 at In Iowa, The Physics Of Politics