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
April 25,2020

New Delhi, Apr 25: The love and loyalty of the fans will never let him leave Royal Challengers Bangalore till the time he is playing IPL, skipper Virat Kohli said on Friday.

RCB have reached the IPL final thrice but have not gone on to win the trophy.

During a live session on Instagram with former South African captain and RCB teammate AB de Villiers, Kohli said winning the tournament remains the goal but he would not leave the team irrespective of the results.

"It has been such an amazing journey. It is always going to be our dream, winning the IPL together. There is no scenario where I could think of leaving the team ever.

"You can feel emotional about the season not going well but till the time I am playing IPL, I am never leaving this team. The fans, their loyalty has been amazing," said the India skipper.

Responding to Kohli's feelings towards RCB, De Villiers too acknowledged the support of fans over the past nine years. Kohli, on the other hand, has been with RCB since 2008.

"Same for me. I never want to leave RCB but to do that I got to keep scoring runs. I am not the captain you see," said the South African in jest.

Both recalled their early days in international cricket and their growth as cricketers and friends.

Kohli said at times, the youngsters coming in have too much regard for the "system" and he wants to see them break the norm.

"I want to see youngsters coming in scoring 500-600 runs. I want people to break the norm. Sometimes I feel people have too much regard for the system in sport. When you break the shackles, you do something special."

Kohli also acknowledged contribution of Mark Boucher, Gary Kirsten and Duncan Fletcher early on in his international career.

"Gary always gave me positive feedback. Boucher told me in 2008 to improve my game against the short ball. He had the vision. Then Fletcher, he had a keen eye for the game. So many people who have contributed (to my growth)," said Kohli.

De Villiers picked the 119 at Wankhede in the 2015 series decider as his best knock against India. Kohli picked the 119 he scored in Johannesburg Test in 2013.

"I was always really motivated to win the series after 2-2 . I was incredibly motivated to do something special," de Villiers said.

They also picked their combined South Africa and India ODI team. It included Sachin Tendulkar, Rohit Sharma, Virat Kohli, Ab de Villiers, Jacques Kallis, M S Dhoni (captain), Yuvraj Singh, Yuzvendra Chahal, Dale Steyn, Jasprit Bumrah and Kagiso Rabada.

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News Network
May 7,2020

Melbourne, May 7: Australia opener Joe Burns is eyeing the Tests against India should they take place later this year, to stabilise his stop-start international career, saying "you want to play in and do well in" in this kind of series.

India is scheduled to play four Tests in Australia in December-January, a series which is currently in doubt due to the COVID-19 pandemic, which has claimed over 2.5 lakh lives across the world.

"They are obviously world class team. I think the two teams going at each other will be very exciting to watch and players playing against each other as well," Burns told reporters in a video conference on Thursday.

"You look at the world ranking, they were number one and now we have got to number one, so I know that series will be anticipated by everyone and as a player this is a sort of series you want to play in and do well in."

With the coronavirus also threatening the T20 World Cup, Cricket Australia is under financial stress and has gone on a cost-cutting drive, which included standing down 80 per cent of its staff at 20 per cent salary.

There are also speculations that the Sheffield Shield for 2020-21 would be curtailed to cut costs.

Burns, however, hoped it won't be tinkered with.

"I love the fact we have a really strong first-class system. The 10 games, where you play everyone twice," Burns, who was struck down by a fatigue illness after an indifferent season, said.

"It leads to world-class players coming into Test teams. You don't want to see that get changed.

"Obviously it is unique circumstances at the moment and There's a lot of things to work through ... the players' association is consulted on those things."

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June 13,2020

Melbourne, Jun 13: Former Australia wicketkeeper-batsman Adam Gilchrist and current opener David Warner have expressed gratitude to two Indian students for helping people in the country during the COVID-19 pandemic.

Gilchrist thanked Sharon Varghese, an Indian student who did her Bachelors in Nursing from the University of Wollongong.

Varghese has been was working on the frontline along with other health care workers to look after the residents of aged-care during the global health crisis.

"She gave up her time to work as an aged-care worker throughout that time. Sharon, I want to say congratulations on the selfless act and for wanting to thank people in Australia because you have enjoyed three and a half years living here. And that’s wonderful to hear," Gilchrist said in a video message.

"Just want to let you know, all of Australia, all of India and more importantly, your family will be so very proud of your efforts."

In another short video, Warner thanked Queensland-based Indian student, Shreyas Sheth.

"Namaste. I am here to say thank you to Shreyas Sheth who is doing selfless work to help others during the COVID crisis. Shreyas is doing his Masters in Computer Science at the University of Queensland and he has been part of University’s outreach program, preparing and delivering food packets to students in need right now," Warner said in the video.

"So I just want to say ‘good on ya’. I am sure your mum and dad and India are proud of you. Keep up the great work."

The videos were shared by Austrade India official twitter account, which have hit almost 10 thousand views in last one week.

Apart from the two cricketers, another Social Media Influencer Amy Aela also sent her thank you note to Liya, an Indian student from Griffith university for her work in providing mental health support to communities in Australia during the pandemic.

"Liya I just want to thank you...we definately need more people like you...just remember that Australia is so so proud of you, India is proud of you..please keep up the good work," Aela said.

Former Australian footballer Craig Foster also sent his thank you message to another Indian origin nurse Arushi from Deakin University. More than 100,000 Indian students are studying in Australia, currently making them one of the biggest cohorts of international students in the country.

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