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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Agencies
June 2,2020

New Delhi, Jun 2: Expressing solidarity with the 'Black Lives Matter' campaign, star West Indies batsman Chris Gayle has alleged that he faced racist remarks during his career and cricket is not free of the menace.

Gayle did not elaborate when he faced racial remarks but hinted it might have been during his stints at global T20 leagues.

"I have travelled the globe and experienced racial remarks towards me because I am black, believe me, the list goes on," he posted on instagram on Monday night.

"Racism is not only in football, it's in cricket too. Even within teams as a black man, I get the end of the stick. Black and powerful. Black and proud," he said.

The big-hitting batsman's comments came in the backdrop of African-American George Floyd's death in the USA after a white police officer, Derek Chauvin, pressed his knee on the handcuffed man's neck as he gasped for breath.

The incident has sparked violent protests across the USA.

"Black lives matter just like any other life. Black people matter, p***k all racist people, stop taking black people for fools, even our own black people wise the p***k up and stop bringing down your own!," Gayle wrote.

Racism in cricket was drew attention most recently last year when England pacer Jofra Archer was abused by a spectator in New Zealand.

New Zealand's top players and the cricket board had offered apologies for the incident to the Englishman.

Also on Monday night, the England cricket team's official twitter handle posted a message denouncing racism.

"We stand for diversity, We stand against racism," the message read.

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News Network
January 9,2020

Kuala Lampur, Jan 9: Saina Nehwal and reigning world champion P V Sindhu produced dominating performances to progress to the women's singles quarterfinals of the Malaysia Masters Super 500 badminton tournament here on Thursday.

Sixth seed Sindhu notched up a commanding 21-10 21-15 victory over Japan's Aya Ohori in a pre-quarterfinal match lasting just 34 minutes. It was Sindhu's ninth successive win over Ohori.

The 24-year-old Indian, who won the World Championships in Basel last year, will take on world number 1 Tai Tzu Ying in the quarterfinals after the Chinese Taipei shuttler got the better of South Korea's Sung Ji Hyun 21-18 16-21 21-10.

Saina, who had won the Indonesia Masters last year before going through a rough patch, dispatched eight seed An Se Young of South Korea 25-23 21-12 after a thrilling 39-minute contest to make the last eight.

This is Saina's first win over the South Korean, who got the better of the Indian in the quarterfinals of the French Open last year.

The two-time Commonwealth Games champion will next take on Olympic champion Carolina Marin.

Saina had defeated Lianne Tan of Belgium 21-15 21-17 in the opening round on Wednesday.

In the men's singles, India's challenge ended after both Sameer Verma and HS Prannoy crashed out in the second round.

While Verma lost to Malaysia's Lee Zii Jia 19-21 20-22, Prannoy was shown the door by top seed Kento Momota of Japan 14-21 16-21.

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News Network
January 10,2020

New Delhi, Jan 10: Injured Assam archer Shivangini Gohain underwent a critical surgery at the AIIMS. Dr. Deepak Gupta, professor of Pediatric neurosurgery at AIIMS, revealed about the delicate nature of the procedure and said there was no room for error.

"It was touching vertebral artery which supplies blood to the brain stem. The arrow was 0.5 cm in front of the spinal cord and the child could have become quadriplegic if someone tried to pull it out," Gupta said.

According to doctors, the arrow accidentally went inside the body damaging the shoulder bone, part of the neck, spinal cord and left lung.

Dr Gupta said, "Now the patient is fine. We had planned the surgery in a very unique way. Last whole night, our team was doing the planning and plotting to conduct this complex surgery. About 15 cm part of the arrow was inside the body which has entered through shoulder bone and affected neck, spinal cord and left lung".

"We started the surgery in the morning at 6 am which lasted for three and a half hours. We have successfully removed the arrow. The patient is stable now and shifted to ICU for observation," he added

Shivangini Gohain, the 12-year-old Assam archer who was impaled by an arrow shot accidentally at the SAI centre in Dibrugarh, was training unsupervised and the mishap was a result of negligence by the local coach and officials, the state's archery association has said.

The child was training at the Dakha Devi Rasiwasia College at Chabua, which serves as an extension centre under the Sports Authority of India (SAI) Regional Centre in Guwahati when the incident took place on Wednesday.

She was airlifted to Delhi on Thursday night and admitted to the AIIMS Trauma Centre. Pulin Das, a joint secretary of Assam Archery Association and executive member of the state Olympic association said the injury to the school girl from the Deodhai village, which is 3km from Chabua, happened as the trainees were practising without any coach and other officials.

“There is a SAI contractual coach Marcy and he has left for the Khelo India Games in Guwahati. He didn't instruct the trainees to stop the camp for some time nor did the college principal, who acted as administrator of the extension centre, looked after the practice,” Das said on Friday.

The extension centre has 11 trainees, six boys and five girls, and they were training under SAI contractual coach A C Marcy from Nagaland, who is in Guwahati for the Khelo India Youth Games.

“The training ground itself is in very bad shape, it was not even a dedicated ground for archery training, some play football, cricket and other sports on that ground. But the worst part is that the SAI coach did not give instructions to stop the camp for a while and the archers were training without any supervision,” he added Das said Gohain was struck by an arrow shot by boys doing practice for compound event. The arrow remained stuck for more more than a day before she was airlifted to New Delhi on Thursday night.

“There was nobody to look after the archers, they were training on their own though their parents were outside the ground. An arrow shot by a boy trainee who was doing compound event practice hit her on the shoulder,” the official said.

Gohain's father Brinchi Gohain was outside the practice area and with no official of the college and SAI coming for help, she was taken to Assam Medical College in Dibrugarh, 33km from Chabua.

“She could reach the AMC in Dribugarh only on Thursday morning. There, the doctors told her parents to take her to a more reputed hospital like AIIMS in Delhi. With help from people close to the local Member of Parliament and Assam CM himself, she was taken by air ambulance to Delhi.

“I was told that she had a very tough time as the arrow remained stuck for more than a day. She is a strong-willed girl and she fought. Her father must be a daily wage labourer and he was distraught also.”

The SAI said that it will bear all the expenses of her treatment. The Assam Archery Association has contributed Rs 20,000 towards her treatment.

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