How has the train developed as the main means of transportation for long distance travel?

Trains have gone through it as the main means of transportation for long-distance travelA long time of development:01.The earliest means of transportation was horse-drawn carriages.

Trains finally appeared and were put to use.

01.In ancient times, people mainly relied on walking to move around and change places, even at that time, the economy was relatively slow. However, people exchange goods, and because of the constant movement and communication, it brings business opportunities and development.

The horse-drawn carriage was the first to be invented, in which logs were placed under wooden planks and transported by rolling。In the beginning, the cart was completely replaced by manpower, and in the later period, animals such as horses, oxen, and donkeys were used to move the cart, and it existed for quite some time in the later period.

Until modern times, the development of bicycles has brought about a new era of means of transportation。In the Englishman, Thomas Newcomen invented the steam engine driven by machinery, which promoted the development of the mechanical industry. After many designs and reforms, the German Karl Benz developed the first internal combustion car.

The development of automobiles is a new era.

03.The English engineer William Jessup designed the flange wheel, which allowed later people to pay more attention to the application of the steam engine. Later, the British engineer George Stephenson invented the world's first steam locomotive, which successfully allowed a 5-ton locomotive to drive a 30-ton carriage.

At this time, human industrial civilization, like this locomotive, entered a period of rapid development. Because trains are easier to transport heavy objects and humans over long distances, humans can almost roar over the plains as long as the rails are erected.

The improvement of train performance and the large-scale design and implementation of the railway have made the railway faster. The speed at which the train is runningThe substantial improvement of theMake the train more versatile。Many of today's high-tech tools are derived from the previous centuries of transportation, and the convenience and speed brought by them have great advantages.

The invention of the train was built in 1804 with a speed of five to six kilometers per hour, in 1840 the first train was actually built on rails, and in 1879 the first electric locomotive was developed.

Trains were started with steam a long time ago, the speed was slow and the journey was short, and then with the development of technology and the times, steam trains became coal and even fuel trains, the speed was faster from generation to generation, and now the trains have become high-speed rail, which can reach 300 to 400 kilometers per hour.

From the original steam locomotive, then to the electric locomotive, and then to the new fuel turbine car, it can be said that it is relatively more and more environmentally friendly, and the speed is getting faster and faster.

As the main means of transportation for long-distance travel, the initial driving force of the train was to burn coal and charcoal, and then the implementation of steam trains, which are now fuel-propulsed, and some use high-speed railways with maglev.

From the steam locomotive of 1781, the electric locomotive of 1879, that is, the traditional green train, to the new self-powered motor train and maglev train.

Stephenson, England.

Stephenson, the Father of Trains. Based on the locomotive model created by his predecessors, he finally built a practical steam locomotive in 1814 through many experiments. The locomotive can tow 30 tons and also solves the problem of frequent train derailments.

But this locomotive has many shortcomings, not only does it go slowly, it vibrates badly, it makes a lot of noise, and it also has a high flame coming out of the chimney. Stephenson continued to experiment and improve. After another 11 years of painstaking research, the world's first passenger and freight steam locomotive, the Voyage, was finally born.

a. In the case of using the ground as a reference, the relative position of the passenger and the ground has changed, so the passenger is in motion; therefore a error;

b. The train can travel at high speed because the power of the train is increased, and the friction between the wheels and the railway has not changed; Therefore berror;

c. The quality of the train remains the same, and the faster the train travels, the greater the kinetic energy; Therefore c is correct;

D, the original high-speed train after the mechanical brake, because the car has inertia, that is, can not stop immediately, so the train driving the motor against the electricity, the mechanical energy into electrical energy so D correct

Therefore, C and D are chosen

The evening is coming":

1.Take the car at night, do not occupy the daytime work time, you can work as soon as you arrive at the station on a business trip, and you can leave after work for personal matters.

2.I saved money on accommodation when I went to other places.

3.There are good traces called in the first shirt shuttle bus.

Speed up": The train is faster to save time and reduce the fatigue of the journey.