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 23,2020

Belgrade, June 23: Novak Djokovic tested positive for the coronavirus on Tuesday after taking part in a tennis exhibition series he organized in Serbia and Croatia.

The top-ranked Serb is the fourth player to test positive for the virus after first playing in Belgrade and then again last weekend in Zadar, Croatia.

His wife also tested positive. “The moment we arrived in Belgrade we went to be tested. My result is positive, just as Jelena's, while the results of our children are negative," Djokovic said in a statement.

Djokovic has been criticized for organizing the tournament and bringing in players from other countries amid the coronavirus pandemic.

Viktor Troicki said Tuesday that he and his pregnant wife have both been diagnosed with the virus, while Grigor Dimitrov, a three-time Grand Slam semifinalist from Bulgaria, said Sunday he tested positive.

Borna Coric played Dimitrov on Saturday in Zadar and said Monday he has also tested positive. There were no social distancing measures observed at the matches in either country and Djokovic and other players were seen hugging each other and partying in night clubs and restaurants after the matches.

 “Everything we did in the past month, we did with a pure heart and sincere intentions,” Djokovic said.

“Our tournament meant to unite and share a message of solidarity and compassion throughout the region.” Djokovic, who has previously said he was against taking a vaccine for the virus even if it became mandatory to travel, was the face behind the Adria Tour, a series of exhibition events that started in the Serbian capital and then moved to Zadar.

He left Croatia after the final was canceled and was tested in Belgrade. The statement said Djokovic was showing no symptoms.

Despite the positive test, Djokovic defended the exhibition series. “It was all born with a philanthropic idea, to direct all raised funds towards people in need and it warmed my heart to see how everybody strongly responded to this,” Djokovic said.

"We organized the tournament at the moment when the virus has weakened, believing that the conditions for hosting the Tour had been met. “Unfortunately, this virus is still present, and it is a new reality that we are still learning to cope and live with.”

Djokovic said he will remain in self-isolation for 14 days and also apologized to anyone who became infected as a result of the series. Organizers of the Adria Tour said the third stage of the event, scheduled to held next week in Bosnia, has been cancelled.

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News Network
January 3,2020

Jeddah, Jan 3: Spanish driver Fernando Alonso is aiming to create history as the first Formula One world champion to win the Dakar Rally when the 12-day marathon gets underway in Saudi Arabia on Sunday.

Alonso, who won the F1 championship with Renault in 2005 and 2006, is one of 351 starters in this year's 7,500 km race which has moved from South America to Saudi Arabia, both venues a long way from the original 1979 route between Paris and the Senegalese capital Dakar.

Among the starters will be motorbikes, quad bikes and trucks but Alonso, who will have five-time bike champion Marc Coma navigating his Toyota, will be in the car category as he bids to become one of the greatest all-round drivers of all time.

Apart from his success in F1, the 38-year-old Spaniard has also won the Le Mans 24-hour race and has singled out the Indianapolis 500 as his priority for 2020. He describes Dakar as “the biggest challenge of my career”.

Alonso is not the first F1 driver to take part in the race, however.

The Belgian Jacky Ickx, a winner of eight grand prix and six-time winner of Le Mans, won Dakar in 1983 and came second in 1986 and 1989. Frenchman Patrick Tambay, who had two wins in his 114 grand prix, came third in 1988 and 1989.

Given the treacherous conditions--long stretches of sand dunes--Alonso is not overly confident of challenging for victory, noting that even the nine-time world rally champion Sebastien Loeb was unable to deliver when he raced the Dakar. Loeb won 13 stages but could only finish second in 2017 and third in 2019.

“If Loeb still hasn't won the Dakar, imagine me, who is coming from asphalt,” Alonso told RTVE. “I think the goal is more to approach the rally as an enriching experience for us.”

Fellow Toyota driver Nasser Al-Attiyah is a more likely candidate, not least because the Qatari is a three-time winner and reigning champion.

"Give me some sand and I'm happy," Al-Attiyah told dakar.com.

He will be pressed, however, by the Minis of Carlos Sainz and 'Monsieur Dakar' aka Stephane Peterhansel who has won 13 Dakars across bikes and cars in 30 races.

“We are obviously very excited about the Dakar in Saudi Arabia. It will be a new challenge for everyone,” said Peterhansel who will be partnered by Paulo Fiuza after the Frenchman's wife Andrea pulled out for health reasons.

“Unfortunately, it is not possible to contest the rally with Andrea, as was planned, however I have known Paulo Fiuza for a very long time. According to the organisers, the navigation will be very complicated and play a major role this time.”

Cyril Despres, a five-time winner on bikes, is also back with a new teammate -- explorer Mike Horn.

“I was stuck in the ice for a month, and now I'm heading to Jeddah. For the first time, the Dakar Rally is in Saudi Arabia and I'm doing it with a very good friend of mine, Cyril Despres,” tweeted Horn whose adventures include an 18-month solo journey around the equator without using any motorised transport.

Horn is also the first man to travel without dogs or transport to the North Pole during winter, in permanent darkness.

Across the dunes of Saudi Arabia that experience may come in handy.

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Agencies
August 5,2020

New Delhi, Aug 5: Indian cricketers Suresh Raina and Harmanpreet Kaur were on Wednesday appointed as the global brand ambassadors of the WTF Sports.

Raina is also joining the brand as a Strategic Partner. WTF Sports, a fantasy sports gaming platform, was today formally launched in India and globally.

The announcement was made through a web conference with prominent cricket host, Vikram Sathaye moderating and hosting the webinar and Vinit Bhatia, Manit Parikh and Yash Kadakia Co-Founders - India and Global, WTF Sports introducing the cricketers as the Global Brand Ambassadors.

Kaur said it was a perfect fit for her and she can use her strategy and experience while playing.
"WTF Sports was the perfect fit with me, I can use strategy and my experience while playing, I've actually learnt to strategize better as I've played along. Additionally, when we were under lockdown and I couldn't really practice, it was fun to come on the platform and feel like I'm still playing," Kaur said in a statement.

On the other hand, Raina said, "It is exciting to be a part of a fantasy sports platform like WTF Sports not just as an ambassador but also as the strategic partner, it is everything that I embody and what I believe in, it's fierce, fun and competitive."

The app currently hosts three major sports, multiple playing modes, and exciting contests, ensuring that sports fans can get more skillful by letting them strategize and use their sports knowledge into rewarding behaviour.

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