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
April 13,2020

Apr 13: Former India opener Gautam Gambhir says if IPL is not played this year, it will be difficult for Mahendra Singh Dhoni to make a comeback to the Indian team.

Dhoni last played for India in the World Cup semi-final against New Zealand in July last year.

Since then he hasn't played any competitive cricket and legends such as Sunil Gavaskar and Kapil Dev have already said that it's getting increasingly difficult for the Jharkhand dasher to make an international return after such a prolonged sabbatical.

He was expected to be seen in action at this year's IPL but the chances of T20 league being played are remote due to the COVID-19.

"If the IPL does not happen this year, then it will become very difficult for MS Dhoni to make a comeback. On what basis can he (Dhoni) be selected since he’s not been playing for the last one or one and a half year," Gambhir said on Star Sports show 'Cricket Connected'.

The 38-year-old Gambhir picked KL Rahul, who has been keeping in ODIs, as an "apt replacement" for Dhoni.

Read: Coronavirus India update: State-wise total number of confirmed cases, deaths

"Obviously his (Rahul's) keeping is not as good as Dhoni’s, but if you are looking at T20 cricket, Rahul's a utility player, can keep and bat at No. 3 or 4. If the IPL does not happen, then Dhoni’s chances for a comeback look dim.

"Ultimately, you are representing India, so whoever dishes out the best performance and can win the match for India should play for the team," added Gambhir.

The southpaw also felt that retirement was Dhoni's personal decision.

"As far as his retirement plans go by, that's his personal choice," said Gambhir.

However, his former teammate and test specialist VVS Laxman feels that Dhoni can continue playing IPL.

"Not only this IPL, he (Dhoni) will probably play in the next couple of IPLs, and then we will take a call about his future as a cricketer," Laxman said on the same show.

However, Laxman, a veteran of 134 Tests, said that the new selection committee, chaired by former spinner Sunil Joshi, will have to discuss Dhoni's future with him.

"Dhoni will be very clear, as far as his plans are concerned, I'm sure he must have communicated that with (captain) Virat Kohli, (coach) Ravi Shastri immediately after the 2019 World Cup in England," said Laxman.

"The new selection committee will have to sit down with MS Dhoni and understand his future, as far as Indian cricket is concerned. But MS Dhoni will continue to play for CSK and do well for CSK," said Laxman, who amassed 8,781 Test runs.

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News Network
February 11,2020

Dubai, Feb 11: Two Indian players-- Akash Singh and Ravi Bishnoi -- and three Bangladeshis have been charged by the International Cricket Council (ICC) for involvement in the quarrel just after the U-19 cricket World Cup summit clash in Potchefstroom, South Africa on Sunday.

Akash and Bishnoi and three Bangladeshi players -- Md. Towhid Hridoy, Shamim Hossain and Rakibul Hasan -- were found guilty of breaching the ICC Code of Conduct after a few players from both sides nearly came to blows after Bangladesh beat India by three wickets to win their maiden U-19 World Cup title.

"Five players have been found guilty of a Level 3 breach of the ICC Code of Conduct for Players and Support Personnel ... (they) were charged with violating Article 2.21 of the code, whilst Bishnoi received a further charge of breaching Article 2.5," the ICC said in a statement.

"All five players have accepted the sanctions proposed by ICC U-19 Cricket World Cup Match Referee Graeme Labrooy," it added.

A near brawl broke out after Bangladesh’s historic win over India in the final. The Bangladesh players were aggressive during the Indian innings with lead pacer Shoriful Islam frequently sledging the Indian batsmen.

As soon as the match ended, Bangladeshi players rushed into the playing area.

"India's Akash accepted the charge of breaching Article 2.21 and has received a sanction of eight suspension points, which equates to six demerit points, which will remain on his record for two years," the ICC said.

Compatriot Bishnoi accepted the charge of breaching Article 2.21 and has received a sanction of five suspension points, which equates to five demerit points.

"Bishnoi also accepted a level 1 charge of breaching Article 2.5 for a separate incident during the match, where he used language, actions or gestures which disparage or which could provoke an aggressive reaction from a batter following the dismissal of Avishek Das in the 23rd over," said the ICC.

"For this he received a further two demerit points meaning seven demerit points will remain on his record for the next two years."

Bangladesh's Towhid Hridoy accepted the charge of breaching Article 2.21 and has received a sanction of ten suspension points, which equates to six demerit points, which will remain on his record for two years.

Shamim Hossain accepted the charge of breaching Article 2.21 and has received a sanction of eight suspension points, which equates to six demerit points, which will remain on his record for two years.

Rakibul Hasan accepted the charge of breaching Article 2.21 and has received a sanction of four suspension points, which equates to five demerit points, which will remain on his record for two years.

All charges were levelled by on-field umpires Sam Nogajski and Adrian Holdstock, third umpire Ravindra Wimalasiri as well as fourth umpire Patrick Bongni Jele. Level 3 breaches carry a minimum penalty of four suspension points and a maximum penalty of 12 suspension points.

The suspension points will be applied to the forthcoming international matches the players are most likely to participate in at either senior or U-19 level. One suspension point equals a player being ineligible for one ODI or T20I, U-19 or A team international match.

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Agencies
January 26,2020

Chennai, Jan 26: Former India cricketer Kapil Dev on Saturday said that it will be a big loss for the Indian side when MS Dhoni decides to hang up his boots.

"I think he has served the country so well and nobody has done it like him. Everyone has to retire sooner or later. He is not playing matches currently. So I don't know when he will come out one day and say -- I have had enough. I think it will be our loss because he is such a fabulous cricketer," Dev told reporters here.

In the recently released BCCI contracts list, Dhoni did not find a place for himself. The former World Cup winning captain Dev said that it is unfortunate that Dhoni was not included in the contract list.

"I feel sorry that they have not included him. 

Tendulkar, Gavaskar had to witness the same. It's not my job and I am not there to give the contract to anyone. It is the job of the cricket board. So, I don't know. You can ask this question to the cricket board. They will be able to answer this question," Dev said.

The 38-year-old Dhoni is currently enjoying some time away from the game. He last played competitive cricket during the 2019 World Cup.

Dhoni had to face criticism for his slow batting approach during India's matches in the tournament. 

Especially in the games against England and New Zealand (semi-final), he had to bear the brunt of netizens, who deemed him as the reason for the Men in Blue's loss.

BCCI released the list of central contract list of players for the period from October 2019 to September 2020.

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