[填空题]
A rotating merry-go-round makes onbtfo n(8l 6cr*e complete revolutixb)k4l0chcbje1 kw )l 18w/wv on in 4.0 s (Fig. 8–38). (a) What is the lin410 xlec vwwjw)c1 lk8bkh)/b ear 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
Post time 2025-2-18 20:00:22
