[填空题]
A rotating merry-go-round make)2yz kntn0l.j s ov-6 poratbv9b kfaew3:,b97h d kj v-0ne complete revolution in 4.0 s (Fig. 8–38). (a) What is the linear spwve9kj0f:pd-7brv -h ,3ba6k b 9otav eed of a child seated 1.2 m from the center? $m/s$ (b) What is her acceleration (give components)? $m/s^2$ the center
Post time 2025-2-18 20:00:22
