試卷名稱:111年 - 111 臺灣綜合大學系統_學士班轉學生聯合招生考試:普通物理A#125311
年份:111年
科目:研究所、轉學考(插大)◆普通物理學
5. Two boys with masses of 40 kg and 60 kg stand on a horizontal frictionless surface holding the ends of a light 10-m long rod. The boys pull themselves together along the rod. When they meet the 40-kg boy will have moved what distance?
(A) 4 m
(B) 5 m
(C) 6 m
(D) 10 m
(E) none of above; need to know the forces they exert.