1. The problem statement, all variables and given/known data Find the orbital velocity of the satellite 300km above the MARS surface. Radius: R = 3396km Mass of mars: M = 6.419 x 1026kg Gravitational constant: G = 6.674 x 10-11m3/kg/s2 2. Relevant equations Vc2 = GM1/R 3. The attempt at a solution I've already posted once, but need more help. If one of the threads must be deleted, please delete the earlier one. I don't know how to put this into a calculator to get the answer I need, because I don't understand how to interpret the many units of measurement after the G constant. After combining the radius with the orbit distance, and thereafter plugging the equation and taking the result's square root - My current answer is 11591.0189394, which I take to mean "11.591" km/s, which must be incorrect. Thanks.