Lucy is worried that her son Samuel might be developing an eating disorder. Which of the following could Lucy do to best help Samuel? A. punish him by withholding his favorite foods
B. teach him about the benefits of eating healthy
O c. monitor his eating patterns for sudden changes
D. confront him by questioning him about his diet

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.