Chongqing is famous as a mountain city, and traffic is a big problem for people to travel. The light rail transit in our city has solved this problem to a great extent. Phase I Project of Light Rail L

Chongqing is famous as a mountain city, and traffic is a big problem for people to travel. The light rail transit in our city has solved this problem to a great extent. Phase I Project of Light Rail Line 6 ① Distance from Wulidian to Lijia section: s = 24km train speed; v = 40k m/h；

From v=St, t = SV = 24 km/h ═ 0.6 h = 36 min;

② When the train is running, the billboards on the platform and the positions of the people sitting on the train are constantly changing, so the billboards on the platform are moving with the people sitting on the train as the reference.

So the answer is: 36; Exercise.