(2006? Zunyi) On May Day, Xiaoying and her mother were traveling by car together. She saw the trees on the roadside receding. The reference object she chose at this time was _____

(1) Using the car as a reference, the position of the trees on the roadside has changed, which is said to be moving;

(2) The unit on the speedometer is km/ h, so the driving speed of the car is 60km/h,

∵v=st,

∴The distance between Zunyi and Guiyang:

s=vt= 60km/h×2h=120km.

So the answer is: car; 60; 120.