(1)所用的时间t=16:10-15:00=1h10min= 7 6 h,s=364km,则平均速度为:v= s t = 364km 7 6 h =312km/h;(2)∵v′=100m/s=360km/h,s′=1080km,根据v= s t 得,∴t′= s v′ = 1080km 360km/h =3h.答:(1)312;(2)从武汉到广州南需要3h.