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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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.

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News Network
February 24,2020

Wellington, Feb 24: Indian batsmen's inadequacies in adverse conditions were laid bare as they crashed to an embarrassing 10-wicket defeat against a ruthless New Zealand side that wrapped up the opening Test in just over three days here on Monday.

Starting the day on 144 for four, India were all out for 191 in their second innings. This was only a shade better than their dismal 165 in the first innings, which eventually proved to be decisive.

Trent Boult (4/39 in 22 overs) and Tim Southee (5/61 in 21 overs), the most under-rated new ball pairs in world cricket, showed that when it boils down to playing incisive seam and swing bowling, this batting line-up is still a work in progress.

The required target of nine runs was knocked off by New Zealand without much ado for their 100th Test win.

India's last defeat was against Australia at Perth during the 2018-19 series but the loss at the Basin Reserve would hurt them more because the visitors have not surrendered in such a fashion of late.

There was no resistance from a star-studded line-up and more than intent, the failure was due to poor technique on a track that had something on the third and fourth day as well.

This is a team that plays fast bowling much better than their predecessors, the reason for their success on the bouncy Australian tracks.

But when it comes to facing conventional seam and swing bowling in testing conditions, they are yet to learn the art of saving a Test match.

India had lost the mental battle on the first day itself when they saw the moisture on the wicket.

The toss became a factor and not for one session did they look comfortable. Mayank Agarwal was the only batsman, who felt at home in patches, as New Zealand showed what a Test match strategy is all about.

If the first innings was about mixing back of length deliveries with fuller length balls, the second innings saw the pacers coming from round the wicket and targeting the rib-cage. The line was disconcerting and it stifled them for good.

It affected their mindset and once Ajinkya Rahane and Hanuma Vihari stepped out on the fourth morning, defeat was written all over as both looked ill-equipped to handle such high quality seam bowling.

Rahane (29 off 75 balls) and Vihari (15 off 79 balls) are players who only play long-form cricket at the international level and both are known for their patience.

But little would have the Indian vice-captain apprehended that he would get a delivery from Boult, which he thought would move away after pitching but it held its line and he had no option but to jab at it, and all he got was an edge.

Southee, who bowls a lovely classical outswinger, then bowled an off-cutter from the other end and before Vihari could comprehend, it came back sharply to peg the stumps back.

Within first 20 minutes, the two seasoned practitioners of swing had knocked the stuffing out of India's resistance.

Rishabh Pant (25 off 41 balls) batted only in the manner he can and played one breathtaking shot off Southee, a slog sweep off a 130 kmph-plus delivery to the deep mid-wicket boundary.

But there was too much left to do with too little support from the other end. Bending on one knee, he tried another audacious slog scoop but couldn't clear.

Southee, who had a terrific match, deservingly completed his 10th five-wicket haul and all it took was 16 overs to end the innings and the match.

New Zealand now have 120 points in the World Test championship and India stayed on top with 36 points.

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