According to the train timetable shown in the table, calculate the average train speed from Beijing South Railway Station to shanghai hongqiao railway station and Qufu East Railway Station to Changzho

According to the train timetable shown in the table, calculate the average train speed from Beijing South Railway Station to shanghai hongqiao railway station and Qufu East Railway Station to Changzhou North. From the topic: Beijing South Railway Station to Shanghai Hongqiao Railway Station S1=18km, T1=12: 23-7: 00 = 5h23min = 52360h;

From Qufu East Station to Changzhou North Station, S2 =1153km-533km = 620km, T2 =11:35-9: 08 = 2h27min = 2920h;

When V = T, it is: v1= s1t1=1318km52360 ≈ 244.8km/h;

v2 = S2 T2 = 620km 2 9 20h≈253. 1k m/h；

A: The average speed of this train from Beijing South Railway Station to shanghai hongqiao railway station is 244.8km/h, and that from Qufu East Station to Changzhou North Station is 253.1km/h/h. 。