... He chuckled, repeating their babble. "That's what I thought too, until I remembered those data tables on gravity and Escape Velocity and such—how, on the Moon, the Escape Velocity is much less than on Earth. And on that tiny second moon—well, my clue was when I threw a stone into the air ... — Shipwreck in the Sky • Eando Binder
... flat voice. "Maybe closer. I'm going to try to make it 450. We'll be smack over enemy territory, but I doubt they could hit us. We'll be hitting better than six miles a second. If we wanted to, we could spend some more rockets and hit escape velocity. But we want to stop, later. We'll ... — Space Tug • Murray Leinster