In world record, Bolt triumphed over air

July 26, 2013

Bolt_triumphedParis, Jul 26: Scientists today said Usain Bolt performed a feat of biomechanics when he ran 100m in a record 9.58sec at the 2009 World Championships in Berlin.

Crossing the line in a time that is still a world record meant Bolt had to muster "truly extraordinary" power and energy to overcome exceptional drag, they said.

Taking into account the altitude of the Berlin track, the temperature at the time of the race and the resistance caused by Bolt's 1.95m (six feet five inch), 94-kilo (207-pound) frame, the researchers calculated he had a drag coefficient of 1.2, which is less aerodynamic than the average human.

Bolt hit peak power after only 0.89 seconds, expending 81.58 kilojoules of energy by the time he finished the race.

But 92.21 percent of this energy was used to overcome air resistance, according to a paper appearing in the European Journal of Physics. Only 7.79 percent was used to achieve motion. After 41 strides, he crossed the line at 43.92 kilometres (27.29 miles) per hour.

"The enormous amount of work that Bolt developed in 2009, and the amount that was absorbed by drag, is truly extraordinary," said scientist Jorge Hernandez from the National Autonomous University of Mexcio.

"It is so hard to break records nowadays, even by hundredths of a second, as the runners must act very powerfully against a tremendous force which increases massively with each bit of additional speed they are able to develop.

"This is all because of the 'physical barrier' imposed by the conditions on Earth. Of course, if Bolt were to run on a planet with a much less dense atmosphere, he could achieve records of fantastic proportions."

The team compared Bolt's time in Berlin with his previous world-record time, of 9.69sec, set during the 2008 Beijing Olympics. In Berlin, he benefited from a tiny tailwind of 3.23 kph (2 mph), the researchers found.

Without this boost, he would have come in at 9.68sec, thus beating the previous mark by 0.01sec. The analysis was made from data provided by the International Association of Athletics Federations (IAAF), whose laser tracker recorded Bolt's position and speed every 0.1 of a second in Berlin.

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News Network
June 18,2020

New Delhi, Jun 18: Premier Indian off-spinner R Ashwin has described Mahendra Singh Dhoni as a "massive influence" on his career, revealing that at the beginning of his IPL stint, he was driven by an intense desire to get the former captain's attention.

Ashwin got his contract with CSK, one of the most successful IPL sides, in 2008 and said the stint with CSK shaped his career.

"IPL and CSK is a stage that everyone wants. For me it was more about recognition. MSD did not know who Ashwin is, (Matthew) Hayden and (Muttiah) Muralithan did not know who Ashwin is. The first thing that came to my mind was that 'I will show these people that Ashwin is here'," Ashwin told Harsha Bhogle on 'Cricbuzz in Conversation'.

"I don't know it was being foolish or arrogance but that was how I was made. Nobody was giving me a chance that Ashwin will play alongside Muralitharan or ahead of Muralitharan. I thought, I will get there ahead of him one day," he added.

Ashwin said Dhoni, who led CSK, had "massive influence" on him and the only way to impress him was by troubling him in the nets.

"I got the eye of Hayden, Jacob Oram, and Stephen Fleming while bowling to them at the nets. They were finding it difficult to face me in the first year (2008) but I had not caught the eye of MSD," he said.

"I never had massive interactions with him. It was going to the nets and getting MSD...he was hitting Muralitharan out of the park and I thought, if I bowl better than him, I met get to play ahead of Murali.

" I got his attention when I got him during a Challenger trophy and celebrated like a crazy kid," he recalled.

After that, Ashwin said during CSK's match against Victoria Bushrangers in the now defunct Champions League, he volunteered to bowl the Super Over and Dhoni gave him the ball without hesitation.

Ashwin did not fare well and ended up conceding 23 runs. The off-spinner said when Dhoni walked past him after the match, he only said that, "you should have bowled the carrom ball."

"MS always maintained that you are exceptionally skilful and you should keep doing what you do."

Ashwin has been very successful against the left-handers as 189 of his 365 wickets are of southpaws. Ashwin credited his engineering background and advice from Duncan Fletcher for the success.

"He made a statement that changed cricket. He said it's all about geometry and left it at that. Understanding angles (engineering background) has given me edge over others," he said.

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News Network
March 31,2020

New Delhi, Mar 31: Australia batsman David Warner on Tuesday decided to shave off his head to show support towards all those people who are working relentlessly on the frontline in the battle against coronavirus.

After shaving off his head, Warner also challenged his Australian team-mate Steve Smith and India skipper Virat Kohli to do the same.

Warner, shared a time-lapse video on Instagram, of him shaving his head, and captioned the post as: "Been nominated to shave my head in support of those working on the frontline #Covid-19 here is a time-lapse. I think my debut was the last time I recall I've done this. Like it or not".

Due to the coronavirus pandemic, Australia's death toll stands at 19, as per the Sydney Morning Herald.

As of 8 am today, 4460 people across Australia have tested positive for COVID-19.

The World Health Organisation had termed coronavirus as a 'pandemic' on March 11.

Earlier in the day, Australia Test skipper Tim Paine also confirmed that the side's tour of Bangladesh is unlikely due to the virus spread.
"You don't have to be Einstein to realise (the Bangladesh tour) is probably unlikely to go ahead, particularly in June. Whether it's cancelled or pushed back, we're not quite sure at the moment," cricket.com.au quoted Paine as saying.

Currently, Australia has 296 points in the WTC from 10 matches, while India has 360 points from nine matches.

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News Network
May 8,2020

New Delhi, May 8: India skipper Virat Kohli believes cricket in empty stadiums is a real possibility in post COVID-19 world and though it is unlikely to have a bearing on the intensity of players, he feels the magic would certainly go missing.

Cricket Boards across the globe are exploring the option of resuming the sport in empty stadiums. There is speculation that fans could be kept away from stadiums in a bid to salvage the T20 World Cup in Australia, which is currently under threat due to the global health crisis.

"It's quite a possible situation, it might happen, I honestly don't know how everyone is going to take that because we all are used to playing in front of so many passionate fans," Kohli said in Star Sports' show 'Cricket Connected'.

"I know it will be played at a very good intensity but that feeling of the crowd connecting with the players and the tension of the game where everyone goes through it in the stadium, those emotions are very difficult to recreate," he added.

Kohli said the many moments which are created because of the passion brought in by fans, would be missing.

"Things will still go on, but I doubt that one will feel that magic happening inside because of the atmosphere that was created.

"We will play sports how it is supposed to be played, but those magical moments will be difficult to come by," he said.

Cricketers such as Ben Stokes, Jason Roy, Jos Buttler and Pat Cummins have backed the idea of playing behind closed doors.

However, legendary Australian Allan Border has said it would defy belief to host a World Cup without spectators.

Another Australian all-rounder Glenn Maxwell and some other cricketers have also expressed similar sentiments.

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