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.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
Agencies
June 14,2020

New Delhi, Jun 14: From being a 20-year-old mischievous talented striker to 35-year-old, India captain Sunil Chhetri has seen Indian Football through thick and thin. Coaches, who have nourished the striker with utmost care to yield the best for the team have seen numerous changes from close quarters but one aspect has remained absolutely perpetual, resolute - Chhetri's never-say-die attitude and 'dedication.'

Igor Stimac, current head coach of the Blue Tigers recalled seeing Chhetri during the preparatory camp ahead of the King's Cup 2019 - his maiden assignment with the Blue Tigers.

The Croatian pointed out that despite being the senior-most member of the troop, "Chhetri craved to push maximum to achieve the result after the heartbreak in AFC Asian Cup."

"Dedicated, workaholic and team man -- those are some of the attributes which define Sunil Chhetri. When I first saw him last year, they were back to the National Team camp after a long gap following the AFC Asian Cup. A few boys were new but the fire under his belly probably was more than anyone else. That's the secret of his long career. Congratulations!" All India Football Federation (AIFF) quoted Stimac as saying.

Sukhwinder Singh, while reminiscing the India-Pakistan bilateral series in 2005, revealed that he wasn't sure about the youngster's credibility at all.

"I needed someone who had the trickery, didn't have the fear and had to be quick. Honestly, Sunil wasn't in my mind at all. He wasn't my first option. I had my doubts," Sukhwinder, coach during Chhetri's first national team endeavour, recalled.

He had seen the youngster from close quarters while coaching in JCT FC where Chhetri started blossoming and hogging the limelight. Chhetri, who scored more than 20 goals during his 3-season-long stay in JCT, had already shown signs of performing in the bigger stages which convinced Sukhwinder Singh picking him up for the high-octane bilateral series in Pakistan.

"I haven't seen anyone as dedicated as Sunil. I saw him maturing in JCT and there were flashes of what he could do in the future. I still remember his hunger. In 19 years of my coaching career, I haven't seen anyone as dedicated as Sunil. He remained undaunted and was never willing to shy away from working hard. Shouldering the responsibility for 15 years demands discipline and he keeps it above everything else," Sukhwinder maintained.

According to Stimac, Chhetri is someone who always runs the extra yard, breaks some more sweat during the training session which, in the process encourages the youngsters to emulate him. The entire process aids the cumulative progress of the team and raises the bar.

"I see him as someone who always pushes the bar in the training and never compromises with the regime. He drives the team and he is the character who defines the team. Numerous characters have glorified the Indian Football history and he's definitely one of them who have made his country proud," Stimac said.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
April 9,2020

New Delhi, Apr 9: The legendary Kapil Dev on Thursday slammed Shoaib Akhtar's idea of a made-for-television three-match ODI series between India and Pakistan to raise funds for the Covid19 pandemic, saying "India doesn't need the money" and it is not worth risking lives for a cricket match.

Speaking to news agency, Akhtar on Wednesday proposed a closed-door series to jointly raise funds to fight the deadly virus both in India and Pakistan. Dev said the proposal is not feasible.

"He is entitled to his opinion but we don't need to raise the money. We have enough. For us, what is important right now is how our authorities work together to deal with this crisis. I am still seeing a lot of blame game on television from the politicians and that needs to stop," Dev said.

"Anyway, the BCCI has donated a hefty amount (Rs 51 crore) for the cause and is in a position to donate much more if the need arises. It doesn't need to raise funds.

"The situation is unlikely to get normal anytime soon and organising a cricket game means putting our cricketers at risk which we don't need to," said the World Cup-winning former captain.

Dev said cricket should not even matter for at least the next six months.

"It is just not worth the risk. And how much money can you make from three games? In my view, you can't even think of cricket for the next five to six months," he said.

Dev said the focus, at the moment, should only be on saving lives and taking care of the poor who are struggling to make ends meet in a lockdown situation.

"Cricket will resume when things get normal. The game can't be bigger than the country. The pressing issue is to look after the poor, the hospital workers, the police and all other people who are on the frontline of this war," said the 61-year-old.

As an Indian, Dev feels proud that his country is in a position help other nations including the United States.

President Donald Trump has thanked Prime Minister Narendra Modi for helping the United States with the supply of hydroxychloroquine, an anti-malarial drug being touted as a potential cure for Covid19 patients.

"Helping others is in our culture and I feel proud about that. We should not seek credit after helping others. We should strive to become a nation which gives more and more rather than taking from others," he said.

Like everyone else, Dev is at home and practising social distancing.

Asked how he views the current situation, he said: "Nelson Mandela stayed in a tiny cell for 27 years. Compared to that, we are in a privileged position (that we just have to stay at home for sometime)."

"There is nothing bigger than life at the moment and that is what we need to save."

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
June 17,2020

New Delhi, Jun 17: Indian skipper Virat Kohli on Wednesday paid tributes to Indian Army soldiers, who were killed during the face-off with the Chinese troops in Ladakh's Galwan Valley.

Extending condolences to the kin of bravehearts, Kohli said, "No one is more selfless and brave than a soldier."

"Salute and deepest respect to the soldiers who sacrificed their lives to protect our country in the Galwan Valley. NO one is more selfless and brave than a soldier. Sincere condolences to the families. I hope they find peace through our prayers at this difficult time," he tweeted.

The violent face-off happened on late evening and night of June 15 in Ladakh's Galwan Valley as a result of an attempt by the Chinese troops to "unilaterally change" the status quo during de-escalation in Eastern Ladakh and the situation could have been avoided if the agreement at the higher level been scrupulously followed by the Chinese side, India said on Tuesday.

The Army confirmed that 20 soldiers were killed in the face-off, including 17 who were critically injured at the stand-off location and exposed to sub-zero temperatures in the high altitude terrain.

Indian and Chinese troops have disengaged at the Galwan area in Ladakh where they had earlier clashed on the night of June 15 and 16, Indian Army said.

Former cricketer Irfan Pathan tweeted, "We will always be indebted to our jawans of #IndianArmy who lost their lives in #GalwanValley #JaiHind."

Expressing similar sentiments, Indian batsman Shikhar Dhawan wrote, "A sacrifice that will never be forgotten by the nation. Heartfelt condolences to the family and loved ones of the Indian Army officer and the two soldiers. Saluting your bravery, Jai Hind! #GalwanValley."

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.