[填空题]
A 55-kg woman and an 80-kg man stand/t -c iwp-y83+rhfv/r sa(vtpqvh 3e6*dc,ys 10.0 m apart on frictionless ice,wmx ueyog(.iw8t /,r.
(a) How far from the woman is their CM? m from the woman
(b) If each holds one end of a rope, and the man pulls on the rope so that he moves 2.5 m, how far from the woman will he be now? m
(c) How far will the man have moved when he collides with the woman? He has moved m from his original position