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 9,2020

Bengaluru, Jun 9: Former India skipper Rahul Dravid has said that Virat Kohli understands that the real respect for him as a cricketer will come through success in the longest format of the game.

Dravid, popularly known as 'The Wall', also said that Test batsmanship has become exciting to watch now as batters play aggressive shots more often.

"I actually believe Test batsmanship has become more exciting than before, the aggressive element of Test batsmanship is going forward, players are playing shots and it is good to see, a good thing for India is Virat Kohli really values Test cricket, he understands that the real respect for him as a cricketer will come from his success in Test cricket," Dravid told Sanjay Manjrekar in a videocast hosted by ESPNCricinfo.

He also said that defensive batting in cricket is not irrelevant, but added that players can have successful careers without having a good defensive technique.

"I don't think it is becoming irrelevant, maybe the value of defensive batting is not the same as it was a generation ago, it can never become irrelevant, I think you still need to defend your wicket if you want to score suns, I feel now you can survive without a good defensive technique in cricket," Dravid said.

"Today, you do not need to have a good Test career to have a successful career, look at the best players in the world today, a lot of them have a good defensive technique and they can play out difficult periods of the game," he added.

The 47-year-old Dravid also said that all young players want to represent their country in all three formats during their initial days, but eventually, they become realistic as time passes by.

"I would say in my interaction with the younger players, everyone's hero is someone who has succeeded in all formats of the game. I think all players start off wanting to play all formats, but then guys get a little realistic about their careers, superstars of the game will still want to play to all formats of the game," Dravid said.

Dravid is the only player in the history of cricket to be involved in two 300-plus ODI partnerships.

He played 164 Tests, 344 ODIs and one T20I for India. Dravid had announced his retirement from international cricket in March 2012.

He finished his career with 48 international centuries.

He has also coached the Indian junior sides (India U-19 and India A) and he is now the head of the National Cricket Academy (NCA).

Dravid has also led the side during his playing days and under his leadership, the side had managed to register their first Test series win in England.

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News Network
July 24,2020

Dubai, Jul 24: The eagerly-awaited Indian Premier League will start on September 19 in the United Arab Emirates (UAE) with the final slated on November 8, IPL Chairman Brijesh Patel told PTI on Friday.

While the event's Governing Council will meet next week to chalk out the final details and approve the schedule, it is understood that the BCCI has informally intimated the franchises about the plan.

"The GC will meet shortly but we have finalised the schedule. It will run from September 19 to November 8. We expect the government approval to come through. It is a full 51-day IPL," Patel confirmed the development after PTI reported the dates on Thursday.

The IPL has been made possible by the ICC's decision to postpone the October-November T20 World Cup in Australia owing to the COVID-19 pandemic due to which the host country expressed its inability to conduct the event.

Patel said that the Standard Operating Procedure to combat the COVID-19 threat is being prepared and the BCCI will formally write to the Emirates Cricket Board.

"We are making the SOP and it will be ready in a few days. To allow crowd or not depends on the UAE government. Anyway social distancing has to be maintained. We have left it for their government to decide on that. Will also be writing to the UAE board formally," Patel said.

There are three grounds available in the UAE -- Dubai International Stadium, Sheikh Zayed Stadium (Abu Dhabi) and the Sharjah ground.

It is learnt that the BCCI will be renting the grounds of the ICC Academy for training of the teams.

The ICC Academy has two full-sized cricket grounds along with 38 turf pitches, 6 indoor pitches, a 5700 square foot outdoor conditioning area along with physiotherapy and medicine centre.

As per the current health protocol in Dubai, there is no need to be in quarantine if people are carrying a negative COVID-19 test report, but if they are not, they will have to undergo a test.

While there was speculation that the IPL will start from September 26, the BCCI decided to advance it by a week in order to ensure that the Indian team's tour of Australia is not jeopardised.

"The Indian team will have a mandatory quarantine of 14 days as per the Australian government rules. A delay would have sent the plans haywire," a BCCI official said on conditions of anonymity.

"The best part is that 51 days is not at all a curtailed period and broadcasters will be happy with full seven-week window," he added.

While the original schedule had five double-headers, Patel said the new one will feature around 12 double-headers which means two matches each on both Saturdays and Sundays.

The Indians are set to play a four-match Test series against Australia starting December 3 in Brisbane after the IPL.

It is expected that with each and every team needing at least a month's time to train, the IPL franchises will be leaving base by August 20 which gives them exactly four weeks time to prepare.

The cash-rich event was originally scheduled to start at the end of March but the COVID-19 pandemic and the travel restrictions that were put in place to contain the virus, led to an indefinite postponement.

However, BCCI President Sourav Ganguly had always maintained that the event will be held some time this year.

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January 6,2020

Jan 6: Former India opener Kris Srikkanth on Sunday said he would prefer K L Rahul over Shikhar Dhawan in the T20 World Cup later this year.

Former India opener Kris Srikkanth on Sunday said he would prefer K L Rahul over Shikhar Dhawan in the T20 World Cup later this year.

Dhawan is returning to international cricket after a long gap. During the senior left-handed batsman's absence, Rahul has emerged as one of the top contenders for the opener's slot in limited-overs cricket.

"Runs against SL (Sri Lanka) don't count. If I was chairman of selectors, I won't pick Dhawan in the T20 WC squad. There is no competition between him and Rahul. Only one winner," Srikkanth said on Star Sports.

Before the series, the 34-year-old Dhawan said that he is looking forward to a "new start" in a new year and wants to win the World Cup for India.

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