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 3,2020

New Delhi, Feb 3: Former India cricketer Sanjay Manjrekar feels there are a lot of similarities between the Virat Kohli-led Team India and the Pakistan team when Imran Khan had led it as both captains instill strong self-belief in their respective teams.

Manjrekar also said that Pakistan under Imran had found different ways of winning matches even when it seemed all was lost.

"India under Virat in NZ reminds me of Pakistan under Imran. Strong self belief as a team. Pakistan under Imran found different ways of winning matches, often from losing positions. That only happens when the self belief is strong," Manjrekar tweeted.

The cricketer turned commentator expressed his opinion after India completed a rare 5-0 whitewash with a seven-run victory over New Zealand in the final T20 International in Mount Maunganui on Sunday.

Manjrekar also lauded KL Rahul, now also shouldering wicket-keeping duty, for his impressive showing in recent times.

"Samson & Pant... the next batting brigade of India obviously have the skill & the power game they just need to infuse a small dose of Virat's batting 'smarts' (mind) into their game," Manjrekar wrote.

The victory at the Bay Oval saw India stretch their record for most successive T20I wins.

This was their eighth win in a row, bettering the previous three instances when they won seven successive matches.

Kohli is the most successful Test captain in Indian cricket history, winning 11 consecutive series at home and are on top of the ICC rankings.

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News Network
May 14,2020

New Delhi, May 14: Mahendra Singh Dhoni is an unconventional and unique leader, whose biggest strength is his incredible gut feeling, says his Chennai Super Kings teammate Faf du Plessis.

The former South Africa skipper has spent considerable time with Dhoni after joining the Indian Premier League (IPL) side in 2011 and has been an integral part of its successful journey.

"He reads the others player really well and he uses that to make instinctive decisions on the field. He's got an incredible gut feeling on the game and I think that's his biggest strength," du Plessis said in a Facebook live session with Bangladesh ODI skipper Tamim Iqbal.

The 35-year-old said Dhoni changed his perception of how a captain should be.

"It was amazing for me to see how different M S was as a captain. I used to think a captain must speak all the time in team meetings etc but M S was completely different.

"He doesn't believe a lot in team meetings. He's a very instinctive captain he's got such a good cricket brain that he relies on it to make the right decisions on the field," du Plessis said of former India skipper.

Dhoni last played for India in World Cup semifinal last year and was expected to be back to playing competitive cricket at now-postponed IPL.

Calling Dhoni the best finisher he has played with, Du Plessis said no one can emulate what the dasher from Ranchi can do with the bat.

"He's extremely calm. I haven't played with someone who is a better finisher than him. It's just remarkable to watch him from the side of the field."

"If someone else tries to do it like him they won't be able to. He's just so unique like he times the ball so late he's got an incredible calmness. He knows his game and he picks a bowler and goes for it."

Du Plessis said that playing for CSK alongside Dhoni and under the guidance head coach Stephen Fleming has taught him a lot about leadership.

"I'm lucky to have started my journey there at CSK because I have really learned a lot from a leadership point of view. I tried to learn as much as possible from Dhoni and Stephen Fleming because both are great captains."

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Agencies
July 7,2020

Mumbai, Jul 7: Australias second largest city Melbourne is set to go for another round of lockdown — for six weeks — from midnight Wednesday as the coronavirus has reared its ugly head in Victoria. And this has further confirmed that this years T20 World Cup in Australia is practically not possible. Even as the ICC keeps delaying the announcement, BCCI hopes that the official call will now be taken with this latest development.

Despite ICC's Financial and Commercial Affairs Committee (F&CA) chief Ehsan Mani as well as Cricket Australia making it clear time and again that hosting a T20 World Cup in the October-November window is practically impossible, the ICC hasn't made an official announcement and that hasn't impressed the Board of Control for Cricket in India (BCCI).

Speaking to media persons, a BCCI official said that it is only the ICC which has kept speaking about delaying the inevitable — announcing a postponement — even as Cricket Australia chairman Earl Eddings wrote to the international body that it looks highly unlikely that a T20 World Cup can be hosted in these trying times.

"As it is there were so many logistical difficulties and that is perfectly understandable. The Australian government has been addressing the public health issue efficiently and there are regulations in place which are crucial to address the challenges. In that background even Cricket Australia has been practical in their assessment of the situation.

"With this present situation where Melbourne is in lockdown, the ICC really must take the final call of closure on the issue if they have any concept of responsible decision making," the official said.

Not just CA chairman Eddings, but also Mani — who is also the PCB chief — recently told the media that the T20 World Cup cannot be held in a bio-secure environment.

"We have had a lot of discussions and the feeling is it (T20 World Cup) would not be possible this year. ICC has World Cups lined up in 2021 and 2023, so we have a gap year where we can adjust this event. God forbid if some player(s) falls ill or mishap occurs during the tournament, it will have a big impact and create panic in the cricket world and we can't take that risk. Having a bio-bubble environment is feasible for say a bilateral series like Pakistan in England, but it is very difficult when 16 teams are involved," he had said.

Cricket Australia's interim CEO Nick Hockley echoed the sentiments when he said the biggest challenge was to get the players from so many teams into the country.

"Our biggest challenge is getting 15 teams into the country. If I compare it with the prospect of a bilateral tour, you're talking about bringing one team in and then playing individual matches. But the prospect of bringing 15 teams in and having six or seven teams in one city at the same time, it's a much more complex exercise," he had said.

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