The fastest runner in the world, the first thing that comes to mind is Bolt.
On August 18, 2008, at the 2008 Summer Olympics in Beijing, Bolt won the men's 100-meter sprint championship with a time of 9.69 seconds and set a new world record.
In 2009, Bolt won the championship with another 9.58 seconds, breaking his 100-meter sprint world record in 2008.
For those of us who are used to sitting rather than exercising, Bolt's amazing results have a feeling of unconsciousness.
How fast is he? Exceeds the average speed of cars in almost all first- and second-tier cities during peak periods.
We can convert recordings into speed, which is more intuitive. Speed, officially, is the distance passed through a unit of time, calculated as v= s/t (where s represents distance and t represents time).
This means that Bolt, in his world record, runs at an average speed of 10.44 m/s.
Since many people are more familiar with cars and speed limits, the average speed should be 37.58 km/h in km/h.
This is faster than the average traffic speed estimated in Boston, New York and San Francisco.
In China, this speed is also the leader, according to autoNavi map "2018 China's major cities traffic analysis report" shows that the average speed of Bolt has exceeded the average speed of cars in almost all first- and second-tier cities during peak periods.
What's even more shocking is that Bolt starts at zero speed and then accelerates, which means his top speed is actually faster.
At a distance of 100 meters, Bolt can outperform many cars
In September 2011, Belgian scientists measured Bolt's performance at different stages of the 100-meter race with lasers. They found that at 67.13 meters, Bolt's top speed reached 43.99 km/ h.
Such a speed is still a big gap compared with the driving speed of ordinary cars of 100 yards.
But if it's just 100 meters away, Bolt doesn't necessarily lose.
Taking the 2.0t mid-range sedan as an example, the acceleration of 100 kilometers is generally 8 seconds, and the time to run over 100 meters is about 7 seconds.
If your car accelerates more than 10 seconds from 100 kilometers to 100 kilometers, then it is estimated that you will not be able to run the Bolt, and such cars are not in the minority.
Why would he be so fast?
From a biomechanical point of view, the fastest sprinter is relatively short, the muscles are full of rapid contractile fibers, can accelerate quickly, while Bolt is 196cm tall, from the appearance point of view, he is not suitable for sprinting at all, and it is impossible to achieve such excellent results.
However, at the Berlin Championship, he ran the entire distance in just 9.58 meters, reaching a speed of 12.2 meters per second when he reached the finish line. For such a huge player, such acceleration will lead to greater air resistance, which is definitely the biggest obstacle in the 100-meter distance.
But he solved all the problems in a better way.
To resist resistance, he exerts more horizontal force. According to the scientists' mathematical model, he used only 8% of his energy to push his body toward the finish line, and 92% of his energy to fight air resistance.
The height reduced his 100-meter step count.
An average runner needs about 55 steps to run 100 meters, a professional needs 45 steps, and Bolt only needs 41 steps. Due to his height, he has an advantage over everyone else after reaching his top speed, taking fewer steps and taking longer steps to reach the finish line.
At last
The above conclusions are only a small part of Bolt's success factors, and his success is definitely not a sentence or two that can be clearly stated, but is the result of a combination of many complex factors, including his excellent genes and talents, crazy training and scientific diet.
Bolt, the closest creature to Superman we've ever seen or heard of.