1. The problem statement, all variables and given/known data A satellite with mass 848 kg is in a circular orbit with an orbital speed of 9640 m/s around the earth. What is the new orbital speed after friction from the earth’s upper atmosphere has done -7.50·109 J of work on the satellite? Does the speed increase or decrease? 2. Relevant equations K1+U1+Wfriction=K2+U2 3. The attempt at a solution I have a hard time setting this problem up. Will gravitational PE stay the same, so K1=K2?