A passenger train and a truck train are traveling in opposite directions from A and B at the same ti

The distance between the two places is x kilometers.

After 12 hours, the passenger car is still one-ninth of the whole journey from place B, then the distance traveled by the passenger car is 9 8x, and the truck is 50 kilometers above the midpoint, then the distance traveled by the truck is 2 x +50, and the passenger car is known to travel 18 kilometers more per hour than the truck.

Then the passenger car travels more than the truck: 18 * 12 = 216 km.

i.e.: 9 8x - 2 x +50) = 21618 7x = 266

x=684

If trucks travel x kilometers per hour, passenger cars travel x + 18 kilometers per hour.

Then the distance between A and B is: 2 (12x-50) kilometers.

Then 12 (x+18) = (1-1/9) * 2 (12x-50) then 12 (x+18) = 16 (12x-50) 9 then 27 (x+18) = 4 (12x-50).

then 27x+486=48x-200

then 21x=686

Solution x=98 3

Then 2 (12x-50) = 2 * (392-50) = 684, so the distance between A and B is 684 kilometers.

Let A and B be separated by x kilometers, and the speed of the truck is ykm h, then the passenger car y+18 km h12*(y+18)=8 9x

12y=solution x=684

684 km Do you want a specific process?

Solution, obtain: 10% of the whole journey of the truck per hour, when the whole roadway of the truck is worn through the flat and strong and suffocated with five-eighths of the platinum, the time is: 5 8 10% = 25 4 hours.

At this time, the bus line: 25 4 80 = 500 km.

The passenger car then travels one-sixth of the whole journey to place B, and the distance between A and B: 500 (1-1 6) = 600 kilometers.

The bus then travels one-sixth of the whole journey to point B

The distance between A and B: 500 (1-1 6) = 600 km

Moving in the opposite direction in mathematics.

Two objects travel in the opposite direction from two places, and after a period of time, they will inevitably meet on the way, and this type of problem is called an encounter problem.

The encounter problem is a question that studies the relationship between the number of speeds, time, and distances. It's and a general travel problem.

The difference is that it is not the motion of one object, so the velocity it studies contains the velocity of two objects, that is, the sum of velocities.

The relational formula for the encounter problem is:

Speed and time of encounter = distance;

Distance: Speed and = time of encounter;

Distance Encounter time = speed and.

Problem solving ideas and methods] Simple problems can be directly used by formulas, and complex problems can be adapted and then used by formulas.

The above content reference: Encyclopedia - Walking in the opposite direction.

Solution: The time of the encounter is 45 2 (80-65) = 90 15 = 6 (hours).

The distance between A and B is (80+65) 6 = 145 6 = 870 (km) Satisfied, if you don't know, please ask.

Sort out knowledge, help others, and enjoy yourself.

Welcome to the "Mathematics and Physics Infinity" team.

Speed difference: 80-65 = 15 km/h.

Distance: 45 2 = 90 km.

The distance between A and B: (80+65) 6=870 km.

Therefore, the distance between A and B is 870 kilometers.

Passenger cars and trucks depart from A and B at the same time, the speed ratio of buses and trucks is 5:7, and the last two cars meet at a distance of 30 kilometers from the midpoint.

If the total length of A and B is x kilometers, then from departure to meeting, the time taken by the passenger and the truck is equal, the passenger car is x 2-30 km, and the truck is x 2 + 30 km. The time is the same, so the distance is proportional to the speed, so.

x 2-30) 5=(x 2+30) 7

7(x/2-30)=5(x/2+30),7x/2-210=5x/2+150,x=360.

So the total length of the two places is 360 kilometers. "

Passenger cars and trucks travel in opposite directions from A and B, which seems to be a classic physics problem, but such a scene is also very common in Shengnakai. In the case of passenger cars and trucks traveling in opposite directions from A and B, where are the two cars meeting?

First of all, we need to understand the difference in speed between passenger cars and vans. The usual speed of passenger cars is between 70-120 km h, while the speed of goods vehicles is usually between 60-80 km h. So, the speed of a passenger car is a bit faster than that of a truck.

Secondly, we need to know when and where buses and vans depart. If the passenger car and the truck depart from A and B at the same time, then they will meet in the middle. However, if they do not depart at the same time or from the same place, the place where they meet will be different.

In short, passenger cars and wagons travel in opposite directions from A and B respectively, and the place where they meet depends on their speed and departure time, departure place and other factors. If you need a specific calculation, you can use a physical formula to calculate it. If you just want to understand the fundamentals of passenger cars and vans moving in opposite directions, then this should meet your needs.

Also, if you need to understand the difference between passenger cars and vans, we can briefly introduce them. A passenger car is usually a tourist vehicle that is used to transport people. Whereas, a wagon is usually a commercial vehicle that is used to transport goods.

The design and purpose of the two cars are different, so there are differences in their speed, load, etc.

Finally, we need to remind everyone that both buses and vans need to follow traffic rules and safety regulations. During driving, it is important to drive safely and not to exceed the speed limit or drive fatigue. Only in this way can the safety and smooth flow of road traffic be guaranteed. <>

Trucks and buses from A and B in the opposite direction, such a scene is certainly familiar to everyone, I believe many people have encountered this situation. So, what should be done in this situation?

First, take care to keep a safe distance. Trucks and buses are relatively large vehicles, and there needs to be enough space when driving to avoid collisions. Especially when driving on the highway, it is important to keep a safe distance to avoid danger caused by excessive speed.

Second, pay attention to traffic lights. When driving on surface roads, strictly follow the instructions of traffic lights and do not run red lights at will. If you encounter a truck and a passenger car traveling in opposite directions, wait for the signal light to pass before driving.

In addition, pay attention to the blind spots of rotten macro trucks and buses. Due to the relatively large body of these two models, the blind spot is also correspondingly larger, which is easy to cause blind spots. Therefore, you should pay attention to observation during driving and avoid driving in the blind spot to avoid accidents.

Finally, pay attention to the road surface conditions. If the road is rough or there are obstacles, drive with special caution to avoid losing control or being hit.

In short, it is a relatively common situation for trucks and buses to travel in the opposite direction from A and B, but in the process of driving, you must pay attention to safety, keep a sufficient distance, obey traffic rules, and drive carefully to avoid accidents. <>

The speed of the bus is set to be 5x km/h.

then 136-2*5x+136-2*4x=136-135

The solution is 5x = 1355 18

The bus went 70% of the way

The truck was 30 percent gone

The truck is 500km from the center

Trucks are 500km away from 50%.

In other words, 20% of the distance is 500km

That 10% is 250km

So the whole journey is 250*10=2500km

It is known that the bus journey takes 20 hours.

So the speed of the bus = distance Time = 2500 20 = 125km h The bus travels 125 km per hour.

The method of column equation can be used: from the speed of passenger and truck: 5:4, it can be set: the speed of passenger car is 5x, and the speed of truck is 4x, and it can be seen from the problem: 20x=16x+60, so x is 15, so the total distance is 600

3 hours 20 minutes = 10 3 hours. The distance between the two places.

480 km.

Truck speed (480-120) 10 3 4 (5+4)=360 10 3 4 9

48 km h.

A passenger car and a truck are traveling in opposite directions from A and B at the same time. Passenger cars travel 80 km per hour and trucks travel 65 km per hourThe truck went 51km before the bus departed, and the two cars met at the midpoint of A and B, and the bus was gone.

Analysis: When the travel time is the same, the speed ratio is equal to the speed ratio, so the distance ratio of passenger cars and trucks is 5 to 4, so this question is buried in the fiber column as follows:

30 2) (imitation 5 4) 4 240 thousand liquid virtual rice.