1. The problem statement, all variables and given/known data In space two banelings are separated by a distance of 1x10^10. Baneling-A has 5 solar mass and a radius of 2.5 billion meters. Baneling-B has 1 solar mass with a radius of 1.5 billion. They are initially at rest from each other. Measured at a rest frame, (a)how fast are they moving when their separation is half of the initial value? (b)What is d(speed)/d(separation)? 2. Relevant equations (1/2) (M) (vf)^2 - (GMm/distace final) = (1/2) ( M) (vi)^2 - (GMm/distace inital) 3. The attempt at a solution (1/2) (1x10^31) (Vf^2) - ((6.67x10^-11) (1x10^31) (2x10^30)) / (1x10^10/2) = (0) - ((6.67x10^-11) (1x10^31) (2x10^30)) / (1x10^10) vf= 163340 is it right? did i use the right mass? do i need to convert solar mass to kgs?