[填空题]
A rotating merry-go-round makes one complete rca 6 bqqxtjx*ue1/u9qp-w3mu;b)d9 n evolutiondd30:wak fc 3jm(ne(s in 4.0 s (Fig. 8–38). (a) What is the linear w3 a0d(me dk3fn(:sjc speed of a child seated 1.2 m from the center? $m/s$ (b) What is her acceleration (give components)? $m/s^2$ the center