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
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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News Network
April 14,2020

Melbourne, Apr 14: As all sporting action across the world has come to a halt due to the coronavirus pandemic, Australian bowlers are pondering as to how Indian skipper Virat Kohli might play in front of no spectators.

India and Australia are scheduled to play a four-match Test series later this year, and it is being speculated that the series might end up taking place without any crowds due to the COVID-19 pandemic.

Australian spinner Nathan Lyon on Tuesday said that it would be interesting to see how Kohli goes about it if he does not get a chance to get the audience behind him.

"He is probably good enough to adapt to any scenario. But I was talking to Mitch Starc the other day and we actually said that if we are playing with no crowd, it'll be quite amazing to see Virat trying to rev up the empty seats," cricket.com.au quoted Lyon as saying.

"It is going to be a little bit different, but Virat is a superstar. He will be able to adapt to any climate that we are able to play in," he added.
During the 2018-19 series, India managed to defeat Australia in Australia for the first time in a Test series.

Australia, at that time were without the services of David Warner and Steve Smith. However, the series later this year promises to be a mouth-watering prospect.

"I am excited about the prospect of India coming out to Australia, it's up there with the biggest series alongside the Ashes. They are an absolute powerhouse of the cricket world, and to have those guys out here is going to be fantastic. Playing in front of crowds or no crowds is out of our control, we have got to follow the advice of all the amazing medical people around the world," Lyon said.

"I have not thought about no crowds or massive crowds, it is just about the opportunity of playing against India again. They had the wood over us last time they came over here but we are a much stronger Australian cricket side at the moment, and I am just unbelievably excited about playing them here at home," he added.

Lyon was slated to represent Hampshire in County Championship this year, however, his stint was called off last week due to COVID-19.
He is Australia's third-highest wicket-taker in the longest format of the game as he has total of 390 wickets in Test cricket.

Lyon was last seen in action in the Big Bash League for Sydney Sixers.

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News Network
February 26,2020

Melbourne, Feb 26: On a high after two easy victories on the trot, including one against defending champion Australia, the Indian women's cricket team will aim to inch closer to a semifinal berth when it takes on New Zealand in the ICC Women's T20 World Cup here on Thursday.

The Indians have hardly broke a sweat in their 17-run and 18-run wins over hosts Australia and Bangladesh in their previous two matches, and they are perched at the top of five-team Group A standings with four points from two matches.

A win against New Zealand on Thursday will take the Harmanpreet Kaur-led side on the threshold of a knock-out stage spot, to be competed among top two teams from Group A and B.

In the two matches so far, the Indian team has been impressive both in batting and bowling.

The 16-year-old sensation Shafali Verma has been the standout batter with a whirlwind 17-ball 39 against Bangladesh, following her 29 against Australia.

One-down Jemimah Rodrigues has also been among the runs with 26 and 34 in the two matches so far.

Only captain Harmanpreet, among the top order batters, has not scored big and she is due big innings.

India is also likely to be bolstered by the return of star opener Smriti Mandhana who missed the match against Bangladesh due to fever.

The middle-order has also done its bit with Deepti Sharma playing a major role against Australia with an unbeaten 49 while Veda Krishnamurthy hit a match-defining 11-ball 20 not out for a late flourish against Bangladesh.

The bowling department has been led admirably by seasoned leg-spinner Poonam Yadav -- seven wickets in the first two matches -- with pacer Shikha Pandey ably supporting her with five scalps so far.

New Zealand, though, have a better head-to-head record against India in recent years, having won the last three matches between the two sides.

Exactly a year back, they had beaten the Indian team 3-0 in a three-match T20 International home series.

India will, however, remember their massive 34-run win against New Zealand in the previous edition of the T20 World Cup in 2018 in the West Indies. Harmanpreet had struck a memorable 103 to lead her side to victory.

New Zealand have some top-class players in their ranks in the form of captain and all-rounder Sophie Devine and top-order batswoman Suzie Bates while pacer Lea Tahuhu and leg-spinner Amelia Kerr will lead the bowling department.

They will go into this match on a high after an easy seven-wicket win over Sri Lanka on Saturday.

Devine had led her side from the front with an unbeaten 75 off 55 balls at the top of the order in that win.

The Teams:

India: Harmanpreet Kaur (capt), Smriti Mandhana, Jemimah Rodrigues, Deepti Sharma, Shafali Verma, Poonam Yadav, Radha Yadav, Taniya Bhatia (wk), Harleen Deol, Rajeshwari Gayakwad, Richa Ghosh, Veda Krishnamurthy, Shikha Pandey, Arundhati Reddy, Pooja Vastrakar.

New Zealand: Sophie Devine (capt), Rosemary Mair, Amelia Kerr, Suzie Bates, Lauren Down, Maddy Green, Holly Huddleston, Hayley Jensen, Leigh Kasperek, Jess Kerr, Katey Martin (wk), Katie Perkins, Anna Peterson, Rachel Priest, Lea Tahuhu.

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