1. The problem statement, all variables and given/known data What is the escape speed of a spaceship fired in space, far away from Earth but at the same distance from the sun as the Earth. 2. Relevant equations Ve = (2GM/r)^0.5 3. The attempt at a solution The problem is that I don't know what the M or r is since it is fired from space... Should I just assume that the mass is the suns and for r I just add the suns radius with the distance from the earth to the sun?