What are the rules for the starting line, and the easiest way to determine the starting line

Do not step on your toes to the starting line before the start of athletics.

Here's how to determine the starting line:

1. The method of determining the starting line is as follows: the method of stretching forward is to subtract the length of the curve of the first lane from the length of the curve of the first lane, that is, the number of the starting line extension of the virtual core as the road. The formula is as follows: wn=2 [r+(n-1)+.

2. The circumference of the first lane of the standard semicircular track and field field is 400m, and its radius has different design schemes, such as 36m, etc.

Benefits of running.

1. Shaping up.

Running is a kind of aerobic breathing exercise, after 20 minutes of running, fat begins to burn, through running, you can achieve the purpose of the first time, it can make the muscles of the whole body rhythmically contract and relax, so that muscle fibers increase, protein content increases. Muscular development is one of the hallmarks of bodybuilding.

2. Stay young.

Running can strengthen your metabolism, delay the degenerative changes of your bones, and prevent the occurrence of senile bone and joint diseases, so that you can delay aging.

3. Enhance the function of heart and lungs.

During exercise, the frequency and efficacy of the heart beat are greatly increased, and the heartbeat, blood pressure and elasticity of the blood vessel walls also increase. Trained athletes can increase their maximum oxygen uptake by 33-60% compared to the average person.

4. Improve sleep quality.

By running, the blood supply and oxygen supply to the brain can be increased by 25%, so that the quality of sleep at night will also be improved.

Experience the use of circles related to the knowledge of computing.

The process of walking the curve distance to understand the curved part of the runway. The first runway is the innermost runway, and the outer ring is longer than the inner ring by observation, so the starting line can be determined by comparing the lengths.

location. Understanding the structure of the track and field track, the distance between the two straight tracks is equal, and the length of the track lies in the size of the circle surrounded by two semicircles, which can be passed by the circumference of the circle.

The calculation of the starting line was determined.

Combined with specific practical problems, by observing the structural characteristics of the runway, the runway is composed of two straight runways and two semi-circular runways, and the two semicircles can form a circle. Then, a brief analysis of the length of the runway is carried out, and then the total length of the runway of the inner circle and the outer ring is calculated in combination with the calculation principle of the circle, and finally the two are compared and guessed to make a judgment on the starting line.

We understand the difference between a straight runway and a runway surrounded by arcs, and we can understand that the starting line of a runway surrounded by arcs is not in a straight line through some **. This is because the circumference of the curved track is different, but the finish line is the same at the time of the race, and the starting line is not in a straight line for the sake of fairness.

In the 70s, the starting line of children was mainly to work their own, and parents at home had the ability to buy textbooks for you, so they didn't have to do too much housework and had time to study, which was a good thing, and in the final analysis, it was the most important thing to work hard.

The post-80s generation is much better than the post-70s, and the children of only children are much more superior, and capable parents have the idea of choosing a good school for their children.

For children born in the 90s and beyond, parents pay more attention to the start of their children, and they demand the best in all aspects from the beginning of preparing for pregnancy. After pregnancy, there should be prenatal education and early education, which is very popular.

To the present children, from kindergarten, they are thinking about the school district house, a family, and the child's education is the core.

Such a contrast shows that the attention of parents affects the starting height of children.

There is an entertainment program that mentions the starting line of life. All the students in the third year of high school at a school stood at a starting line, after which the host began to ask questions:

1.Both parents graduated from college and took a step forward.

2.If you have the experience of going abroad, take a step forward.

3.Until now, in addition to studying subjects, there is also a specialty that I am studying, and I still have a certain level, so I am one step forward.

4.Parents often praise your merits in front of people, and Ye Sun Chang takes a step forward.

5.Your parents love you a lot, trust you a lot, and have great expectations for you.

After asking these questions, some students took several steps forward, some students took a step, and some were still in place.

The host said: "These are not your problems, some are decided by the parents, Kai is not although there is a gap now, but next, we need to work hard to run to the finish line, and the closest to the finish line is not necessarily the first." ”

It's true, sometimes, parents are the starting line for their children.

The important thing is not that you are afraid of a low starting line, but that there are people who are not only higher than your starting point, but also work harder than you. This is the most terrifying.

The 400-meter standard runway has a radius of 36 meters and a runway width of one meter.

The circumference of the runway in the first lap is 2* meters, the circumference of the runway in the second lap is 2* meters, and the circumference of the runway in the second lap is meters.

The circumference of the runway on the second lap minus the circumference of the runway on the first lap, and count the dry meters = meters and meters = meters. If the runway width is the kilometer meter of the adjacent runway peripheral runway, the runway width of the adjacent runway shall be advanced by meters, and the runway width shall be advanced by meters of the adjacent runway peripheral runway.

You can start now, set a goal, not too far, it can be tomorrow or the next second, and then go to the goal, be sure to complete the goal. In this way, then your current second is the starting line.

Are you a student, I think it's okay, no matter what stage you are in life, you must take a clear goal, short-term and long-term, with a purpose, you know what to do in the next minute, and the power of starting is greater.

The easiest way to determine the starting line is to use a standard starting line marker. Common starting line markers include:

Starting line band: A long, long-shaped runway marker, usually consisting of two long strips, that can be placed on both sides of the runway.

Starting Line Mat: A thick mat that can be placed on the track and is used to determine the starting line.

Starting Line Paint: Paint color on the track to mark the starting line.

When using these markers, they can be placed in the prescribed position and manner.

In addition, there are some other ways to determine the starting line, such as using laser lines or electronic lines, which require some special equipment and skills.

Finally, when determining the starting line, you also need to make sure that it meets the rules of the race and safety requirements.

People often complain that their origins are not good, their parents are uneducated, and they have no relatives to rely on at home. It's so hard to start from scratch. But throughout the ages, there have been countless self-made people.

Which rich family is not the last few generations are also poor people, they also rely on their own strength, and finally made a fortune. When you are frustrated, don't just look at what is in front of you, look farther away, and maybe you will gain something different.

My mother often said that two little sisters in the same village, one married a local rich man and lived a life of Kuotai directly after marriage, and the other married a farmer in the village, and the two lives were very different. But who would have thought that a few years after the meeting, Mrs. Kuo's husband lost money in business because of opportunism, went bankrupt, and returned to the pre-liberation period. And the one who married the farmer, after marriage, the two worked diligently together, cultivated wasteland, planted trees, and developed organic farming, and life got better and better.

Don't complain, don't give up, and live well on your own. What you have in front of you doesn't mean anything. Only with unremitting efforts can we do better.

Any race that wins at the starting line is a sprint. But life is a marathon, and no marathon in the world is determined by the quality of the start. A life is very long, there will always be opportunities waiting for you, what we can do is to improve ourselves and grow ourselves as much as possible, don't wait for the day when the wind rises, unprepared.

Smart people never complain, but look for the next exit, and when the wind rises, they can have the strength to grasp it.