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.
News Network
July 19,2020

Dubai, Jul 19: On hold for the past two months, the fate of this year's T20 World Cup will be up for a decisive round of deliberation when the ICC board meets virtually on Monday with the BCCI hoping for a postponement to ensure that the IPL can go ahead.

The global event is supposed to be held from October 18 to November 15 in Australia but the country's cricket board had, in May itself, expressed its inability to host amid a second surge of Covid-19 cases in the state of Victoria.

With India's case load also exceeding the 10 lakh mark, including more than 26,000 deaths, the IPL, if it is held, is likely to move to the UAE once the central government gives its go ahead.

"The first step was postponement of Asia Cup, which has happened. We can only start to move ahead with our plans after the ICC announces the postponement. They have been sitting on the decision even after Cricket Australia said that they are not too keen on hosting the event," a BCCI Apex Council member told PTI on conditions of anonymity.

This year's T20 World Cup will likely be held in Australia in 2022 as India doesn't want to swap its 2021 hosting rights with Cricket Australia as of now.

That Australia won't be hosting the mega event was clear after the cricket board told its players to prepare for a white-ball series against England scheduled for late September.

CA has even announced a 26-strong preliminary squad for that tour.

The ICC, on its part, has maintained that it wants to explore all possible "contingency" options before taking a call of such immense magnitude. And it is not unusual for the governing body to wait this long.

"Pakistan was supposed to host the Champions Trophy in 2009. After the terrorist attacks on the Sri Lankan team bus, everyone in their proper senses knew that PCB will never host a big event in distant future," said a source familiar with the functioning of the ICC.

"Yet, ICC deputed its employees in Pakistan for months when South Africa was already preparing to host the event. Everyone knew but a formal announcement of shift took months as threat assessment was part of protocol.

"The ICC couldn't have just postponed 9the T20 World Cup) immediately as initially, the top ministers of the Australian government expressed keenness to host," he added.

The Pakistan Cricket Board has also resigned itself to this outcome after vehemently opposing the Indian board.

The postponement of Asia Cup, which was supposed to be hosted by the PCB, to 2021 was a big blow to Ehsan Mani and his team.

"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," Mani had recently said while talking to reporters in his country.

It has been learnt that PCB is contacting other boards in the hope of finalising some bilateral engagements as the national team has nothing lined up after its England tour.

Nomination process for Chairman's election:

The other issue that is likely to come up for discussion in Monday's meeting is the nomination process for the next independent chairman of the ICC after Shashank Manohar's resignation earlier this month.

It is learnt that there is no consensus on what should be the criteria in case multiple candidates join the fray.

"The board is not united on whether the usual 2/3rd majority to decide will be used (as its in case of policy decision) or the case of simple majority among the 17 board members," an ICC Board member said.

England and Wales Cricket Board's Colin Graves was considered the top contender with BCCI president Sourav Ganguly's name also being floated.

Ganguly's candidature will certainly depend on whether the Supreme Court waives off the cooling off period and allows him to continue as BCCI president beyond July 27 when he completes six years as an office-bearer in the Indian Board's state and national units.

When asked about the possibility of taking up the ICC job in a recent interview, the 48-year-old said he is young and and in no hurry for the position.

New Zealand's Gregor Barclay, Hong Kong's Imran Khawaja, who is currently the interim chairman, are also being talked about as potential candidates.

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
January 16,2020

New Delhi, Jan 16: Veteran cricketer Mithali Raj was on Thursday demoted to Grade B from A in the BCCI central contracts while Radha Yadav and Taniya Bhatia were elevated to the middle bracket.

Mithali not being kept in the Rs 50 lakh category was expected as the 37-year-old retired from T20s in September last year. However, she remains the ODI captain and plans to carry on till the 2021 World Cup.

T20 skipper Harmanpreet Kaur retained his A category contract alongside Smriti Mandhana and Poonam Yadav.

Radha and Taniya, who both had a Grade C contract worth Rs 10 lakh last year, have now entered Grade B (Rs 30 lakh).

Players getting a central contract for the first time are 15-year-old opener Shafali Verma and Harleen Deol, who like the teenager is an attacking batter.

Shafali has attracted a lot of attention ever since making her India debut last year. She recently made 124 against Australia A in Brisbane. The opener will be expected to deliver in the upcoming T20 World Cup Down Under.

Dropped from the list is Mona Meshram, who was in Grade C last year and hasn't played a single game in recent times.

The latest contracts run from October 2019 to September 2020.

Grade A (Rs 50 lakh): Harmanpreet Kaur, Smriti Mandhana, Poonam Yadav.

Grade B (Rs 30 lakh): Mithali Raj, Jhulan Goswami, Ekta Bisht, Radha Yadav, Taniya Bhatia, Shikha Pandey, Jemimah Rodrigues, Deepti Sharma.

Grade C (Rs 10 lakh): Veda Krishnamurthy, Punam Raut, Anuja Patil, Mansi Joshi, D Hemlatha, Arundhati Reddy, Rajeshwari Gayakwad, Pooja Vastrakar, Harleen Deol, Priya Punia, Shafali Verma.

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
January 10,2020

Karachi, Jan 10: Former Pakistan batsman and current U-19 head coach Ejaz Ahmed feels that his side can beat defending champions and arch-rivals India in the forthcoming ICC Youth World Cup beginning in South Africa on January 17.

"India has a very good cricket system and it is organized but I know that we have more passion than them when we play against each other and that is how we also beat them in the semi-finals of the recent Asian Emerging Nations Cup," Ejaz said.

Ejaz, who has played 60 Test and 250 ODIs, was head coach of the Pakistan Emerging side which beat India before eventually winning the title in Bangladesh last year.

"Even in the past, we beat India because of our greater passion and this time also I know the passion of our players will prevail over them although they have a very strong outfit," he added.

The 51-year-old Ejaz, however, said at the end of the day it would be all about how a team plays on that particular day.

"It is the same in the World Cup it does not matter which team is number one or defending champions what will matter is how a team plays on a given day. I personally feel our team is well balanced," he said.

Ejaz did not believe that India would get advantage of having played a four-nation tournament with South Africa, New Zealand and Zimbabwe in South Africa before the World Cup.

"Our players have also trained hard in Lahore and we have played around 11 matches. We will also reach South Africa nine days before the World Cup and we have some practice games and I think our preparations are also very good for the tournament," he said.

The former batsman also said the absence of fast bowler Naseem Shah will not impact much on the team's performance. Naseem was withdrawn from the Pakistan U-19 squad after he played for the senior team in three Test matches against Australia and Sri Lanka.

"Look there was no controversy at all. The way we now see things is that you can't expect a MBA to go and take BA exams. That is how we look at Naseem Shah, he has made the grade for Pakistan and now he should be performing for the senior team," said the head coach.

"We have a couple of exciting young talent in the ranks. I expect Rohail and Haider to play for the senior team in two to three year's time, they are that good."

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.