Consider two planets in space that gravitationally attract each other. if the masses of both planets are doubled, and the distance between them doesn't change, then the force between them is

Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.