Q:  If the clump of gas has an initial velocity of v = 5,000 km/s,
         what will the final temperature of the gas be?


                     (15/16) [ 1.67 x 10^(-27) kg ] * (5 x 10^6 m/s)^2
             T  =   --------------------------------------------------
                              33 *  1.38 x 10^(-23) J/K


                =    86 million K


       That's pretty hot.