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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January 23,2020

Dhaka, Jan 23: Left-arm pacer Mustafizur Rahman, who is part of the Bangladesh squad traveling to Pakistan, posted a cryptic tweet before team's departure which raised a few eyebrows.

On Wednesday evening, Rahman took to Twitter to post a selfie along with his teammates before the team's departure and asked his followers to pray for them, writing: "Heading to Pakistan. Remember us in your prayers."

Bangladesh were earlier reluctant to travel to Pakistan. However, the officials of both the teams met in Dubai and it was after many deliberations, the Bangladesh Cricket Board (BCB) agreed to send their team for a cricket series.

Bangladesh will be playing three T20Is, two Tests and an ODI in Pakistan between January and April. The T20I series will be played from January 24-27 in Lahore, followed by the first Test from February 7 to 11.

Bangladesh will then return to Pakistan in April for the one-off ODI which will be played on April 3 and the second Test from April 5-9.

Senior players like Mushfiqur Rahim decided against traveling to Pakistan citing personal reasons. After that, five members of the Bangladesh coaching staff also pulled out of the tour.

Pakistan have also recalled the experienced duo of Mohammad Hafeez and Shoaib Malik, along with pacer Shaheen Afridi for the T20I series.

Squads:

Bangladesh: Mahmudullah (Captain), Tamim Iqbal, Soumya Sarkar, Naim Sheikh, Najmul Hossain Shanto, Liton Kumer Das, MD Mithun, Afif Hossain Dhrubo, Mahedi Hasan, Aminul Islam Biplob, Mustafizur Rahman, Shafiul Islam, Al-Amin Hossain, Rubel Hossain, Hasan Mahmud.

Pakistan: Babar Azam (captain), Ahsan Ali, Amad Butt, Haris Rauf, Iftikhar Ahmed, Imad Wasim, Khushdil Shah, Mohammad Hafeez, Mohammad Hasnain, Mohammad Rizwan (wicketkeeper), Musa Khan, Shadab Khan, Shaheen Shah Afridi, Shoaib Malik, Usman Qadir.

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March 7,2020

Melbourne, Mar 7: He will be supporting Australia for sure but former pacer Brett Lee feels an Indian victory in Sunday's T20 Word Cup final could be a "start of a major breakthrough" for the women's game in the cricket-mad country.

India and Australia will lock horns in what is expected to be a blockbuster title clash at the Melbourne Cricket Ground.

"As an Australian, I'd love nothing more than for (Meg) Lanning's team to do the job. But if India were to win the World Cup for the first time, victory would do so much for women's cricket in a country that already adores the sport," Lee wrote in an ICC column.

"This could be the start of a major breakthrough, particularly with the amount of talent that is coming through."

The former speedster said Australia will have to look for ways to counter the in-form 16-year-old Shafali Verma.

"In Shafali Verma, India boast one of the most talented players in the world and you feel that for Australia to win the game, dismissing her will likely be their first job.

"I've been so impressed with the opener - it's staggering to believe she's only 16 with the confidence she has in her own ability and the way she strikes the ball so cleanly.

"She's such good fun to watch and I'm not sure the women's game has seen anyone like her for such a long time."

Shafali has been the star of the tournament, having amassed 161 runs at a strike rate of 161, consistently providing India solid starts, and that was not lost on Lee.

"To be the world's best T20 batter already shows just how far she has progressed in such a short space of time and the experience in this tournament will hold her in good stead for years to come.

"Even with the way she's played in Australia and her fearless brand of cricket, you still get the feeling she has more to come as well."

He reckoned Shafali may have another big score awaiting her.

"She's got a big score in her locker and there's probably no better place to do that than the MCG. Shafali is already a record breaker but if she can steer her side to their first Women's T20 World Cup title at just 16, then the sky really is the limit for her career."

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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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