Yangquan v 1 photography

(1) The train time from Yangquan North to Shijiazhuang North is:

t 1 = 10:03-09:22 = 4 1min = 4 160h，

∫v = ST，

∴ mileage from Yangquan North to Shijiazhuang North:

s 1 = v 1t 1 = 153km/h×4 160h = 105km。

(2) The train time from Taiyuan to Beijing West is t=4h.

The average train speed from Taiyuan to Beijing West is:

v=st=508km4h= 127km/h。

Answer: (1) distance from Yangquan north to Shijiazhuang north105 km; ;

(2) The average train speed from Taiyuan to Beijing West is127 km/h. 。