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
February 13,2020

Feb 13: Kobe Bryant and his daughter Gianna were buried in a private funeral service in Southern California last week, multiple outlets reported late Tuesday.

Citing Kobe Bryant's death certificate, Los Angeles Fox affiliate KTTV reported the remains of the former Lakers star and his daughter were transferred to Pacific View Memorial Park and Mortuary in Corona del Mar. Kobe and Brianna were laid to rest in a private ceremony there last Friday.

According to KTTV, the death certificate cited Kobe's cause of death as "blunt trauma" sustained in a "commercial helicopter crash." It also said his death was "rapid."

Corona del Mar is a community within Newport Beach, where the Bryant family lives.

Kobe, 41, and Gianna, 13, were among nine people killed when the helicopter they were in crashed on a hillside in Calabasas, Calif., northwest of Los Angeles, on Jan. 26. Orange Coast College baseball coach John Altobelli, 56; his wife, Keri; and their daughter Alyssa, 14 -- who played on the same club basketball team as Gianna Bryant -- also were killed. Christina Mauser, a 38-year-old who was the top assistant coach of the Mamba girls basketball team, was also killed in the accident, as were Sarah Chester, 45; her daughter Payton Chester, 13; and pilot Ara Zobayan, 50.

A public memorial service for the Bryants will be held Feb. 24 at Staples Center, beginning at 10 a.m. PT.

While the date -- 2/24 -- conveniently falls between two Lakers' home games, it still could have been chosen symbolically. Gianna -- one Kobe and Vanessa' four daughters -- wore No. 2 on her basketball jersey while Kobe was No. 24 for part of his 20-year-tenure with the Lakers, and his retired jerseys -- he also wore No. 8 -- hang at Staples Center.

The Los Angeles Times reported that "entry is expected to be severely restricted" at the venue despite Staples Center's capacity of about 20,000.

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News Network
April 28,2020

Chennai, Apr 28: Former Karnataka batsman J Arun Kumar was on Tuesday appointed coach of the USA cricket team and listed earning a Test status, by his own admission a "far-fetched" thought at the moment, among his long-term goals.

Jak, as he is known in the cricketing circles, has worked with the Karnataka team for several years and as batting coach with IPL franchise Kings XI Punjab.

"... Following an exhaustive recruitment process, former first class Ranji Trophy and IPL player and coach, J Arun Kumar, had been identified as the preferred candidate for the next men's head coach," USA Cricket chief executive Iain Higgins said on its website.

The CEO added, "He travelled to the USA to meet support staff, selectors and players at a talent camp in Houston and to continue those discussions with us.

"I'm delighted to say that we have subsequently reached agreement with Jak that he will take up the role and be permanently based in the United States as and when his working visa has been obtained."

Arun Kumar was also in charge of a fledgling Puducherry team before quitting in February owing to differences with the association officials.

The COVID-19 pandemic has however prevented a prompt departure for the United States.

"Of course, the COVID-19 crisis has now presented some challenges around the scope of the role in the short/medium term, but we look forward to completing all of the arrangements and to welcoming him more formally in due course," Higgins said.

Arun kumar, who scored over 7,200 runs in first-class cricket and over 3,000 runs in List 'A' games, had guided Karnataka to a treble for two successive seasons -- Ranji Trophy, Vijay Hazare Trophy and Irani Cup -- in 2013-14 and 2014-15.

Delighted to get the role, the 45-year old said he has a vision for USA cricket, including making it a Test-playing nation.

"The first thing is based on my visa and when the coronavirus situation will end in the US, so it's all based on that. At what time my visa will be approved, that's when I will be heading there.

"There are long, mid and short-term goals and my vision obviously will be that the USA in the coming years will be one of the Test playing nations.

"It's a far-fledged goal, but yes, that's the vision and as of now the short term will be World Cup league.

"We will have to be the top side in that and then go to the next level," Arun Kumar told PTI in an interaction.

He further said the immediate aim is to get the team together after a bad run in Nepal.

"Priority is to get the team together, we had a bad run in Nepal, so obviously the team is on little down slide, so we will get up and the immediate short-term goal is to get in touch with players.

"This lockdown gives us time to actually know each other, although we are spread out in different parts of the country, and it is gives us time to connect better and work on certain mental and tactical aspects of the game," he added.

Arun Kumar had been in the US briefly some time ago and had met some officials, selectors and players at a camp in Houston.

"I met some officials, selectors and players at a talent camp in Houston and got an insight of what I can expect in the future and based on those we have designed a pathway for junior to senior cricket and women's cricket.

"It is a work in progress," he said.

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News Network
June 10,2020

Kingston, Jun 10: "Enough is enough", said West Indies all-rounder Dwayne Bravo as he opened up on the raging issue of racism and called for "respect and equality" for black people, who have faced discrimination for years.

Bravo joined the likes of his former captain Darren Sammy and Chris Gayle in denouncing racism in the wake of African-American George Floyd's killing at the hands of a white police officer in the USA.

"It's sad to see what's going on around the world. As a black man, we know the history of what black people have been through. We never ask for revenge, we ask for equality and respect. That's it," Bravo told former Zimbabwe cricketer Pommie Mbangwa in an Instagram live chat on Tuesday.

"We give respect to others. Why is it that we are facing this over and over? Now enough is enough. We just want equality. We don't want revenge, war.

"We just want respect. We share love and appreciate people for who they are. That's what is most important."

The 36-year-old, who has played 40 Tests, 164 ODIs and 71 T20Is for West Indies, said he wants the world to know that they are powerful and beautiful people and gave the example of greats such as Nelson Mandela, Muhammad Ali, Michael Jordan.

"I just want our brothers and sisters to know that we are powerful and beautiful. And at the end of the day, you look at some of the greats of the world, whether it is Nelson Mandela, Muhammad Ali, Michael Jordan we have had leaders who paved the way for us," he said.

Two-time T20 World Cup-winning captain Sammy had earlier alleged that a racist nickname was used to address him during his IPL stint with Sunrisers Hyderabad and demanded an apology.

Sammy said he was called 'Kalu' while he was in India. 'Kalu' is a derogatory word to describe black people.

Gayle, who too plays in the IPL, took to Twitter to back Sammy, saying that racism does exist in cricket.

"It's never too late to fight for the right cause or what you've experienced over the years! So much more to your story, @darensammy88. Like I said, it's in the game!!," Gayle tweeted.

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