Xiaoying's family went to Beijing for a trip. At the intersection of suburban roads in Beijing, he saw the traffic sign as shown in the picture. Ask students to answer the following questions: (1)

(1) The “60km” on the signboard indicates that the distance from here to Beijing is 60km; the “40” on the signboard indicates the maximum driving speed of the car, that is, the speed limit is 40km/h; < /p>

(2) The maximum speed of the car is v=40km/h from the traffic sign. The distance from here to Beijing is s=60km.

It can be obtained from v= s t. From this sign To reach Beijing at a constant speed, the fastest time required is:

t= s v = 60km 40km/h =1.5h;

Answer: (1) The meaning of "60km" is : The distance from the sign to Beijing is still 60km; "40" means: the maximum speed from the sign to Beijing is 40km/h;

(2) Please abide by the traffic rules. Under the premise, the fastest time to reach Beijing from this signboard is 1.5 hours.