1. The problem statement, all variables and given/known data A space probe is to be launched from a space station 200 miles above Earth. Determine its escape velocity in miles/s. Take Earth's radius to be 3960 miles. 2. Relevant equations None. 3. The attempt at a solution m(dv/dt)=-(mgR^2)/(x+R)^2 dv/dt=-(gR^2)/(x+R)^2 Now what? The answer is 6.76 miles/s.