A 56 kg woman and a 78 kg man stand 13.0 m apart on frictionless ice
(a) How far from the man is their center of mass (CM)?
(b) If each holds one end of a rope, and the man pulls on the rope so that he moves 2 m, then how far from the woman will he be now?
(c) How far will the man have moved when he collides with the woman? I actually have a and b, I just can't get c