1. The problem statement, all variables and given/known data If the mass of the Moon is 7.4 x 1022 kg and its radius is 1.74 x 106 m, compute the speed with which an object would have to be fired in order to sail away from it, completely overcoming the Moon’s gravity pull. This might seem like a stupid question to ask, but I'm not sure what equation to use. That's my only problem. My classmate used V = √(2GM/r) but I'm not sure how he got it. Any help would be great!