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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March 7,2020

Melbourne, Mar 7: Ahead of the Women's T20 World Cup against Australia, India spinner Poonam Yadav said that skipper Harmanpreet Kaur has given her a lot of support.

"Harmanpreet has been of immense support. When I got hit for a six in the first over, she came to me and said, 'Poonam, you're one of the most experienced players in the team, and we expect better of you'," Poonam said.

The 28-year-old experienced bowler has played 68 shortest format games for India and taken 94 wickets at an average of 22.66.

She has been in devastating form throughout the tournament and has bagged nine wickets so far.

"So, that kind of stirred something within me. I told myself if my captain has that much faith in me, I should be able to make a comeback," she said.

"I took a wicket in the very next ball, and didn't look back since. Now when I look back at that moment, it means so much in the context of my individual performance and run to the final," she added.

In the opening game against Australia at Sydney Showground, Poonam came within a whisker of the third hat-trick in Women's T20 World Cup history, dismissing Rachael Haynes and Ellyse Perry before Jess Jonassen was dropped.

The final of the tournament will be played at Melbourne Cricket Ground (MCG) on March 8 -- International Women's Day.

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May 15,2020

New Delhi, May 15: Former England skipper David Gower feels Sourav Ganguly has the right "political skills" to lead the ICC one day and he has already displayed that as BCCI president, which is a "far tougher job".

The elegant left-hander is very impressed with Ganguly's leadership abilities and believes that he has what it takes to head the global body in the future.

"One thing I have learnt over the years is that if you are going to run BCCI, you need to be many, many things. Having a reputation like he (Ganguly) has is a very good start, but you need to be a very deft politician.

"You need to have control of a million different things," Gower said ahead of "Q20", a unique chat show for the fans presented by 'GloFans'.

Gower reckons being president of the BCCI is the toughest job imaginable in world cricket.

"And of course, you need to be responsible for a game that is followed by, I mean, should we say a billion people here in India," he said.

"We all know about the immense following for cricket in India. So it is indeed a wonderful thing to behold. Sourav has the toughest task imaginable in charge of BCCI, but so far I would say the signs are very good.

"He has listened, given his own opinion and has pulled strings gently," he said.

Political skills are a must in administration and that's where Gower finds his fellow left-hander ticking all the boxes.

"He is a very, very good man and has those political skills. He has the right attitude and can keep things together and will do good job. And if you do a good job as BCCI chief in the future, who knows?

"But I would actually say the more important job, to be honest, is running BCCI. Being head of ICC is an honour, there is a lot that can be done by ICC, but actually look at the rankings, look at where the power is heading up. BCCI is definitely the bigger job," he said.

On the cricketing front, Gower believes World Test Championship has given the format much-needed context.

"The idea of this World Test Championship has come about for one very simple reason that people are worried about the survival of Tests. Back in the seventies, eighties, I don't think we needed context to be fair.

"Test cricket was very much more obviously the most important format and if there was anything to be judged by, it was the performances in Test matches both as an individual and as a team.

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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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