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
January 22,2020

New Delhi, Jan 22: The pitches in New Zealand have become a lot more batting-friendly over the years, says iconic former batsman Sachin Tendulkar, insisting that India have the “ammunition” to trouble the sprightly hosts during the upcoming series.

Tendulkar, who has been on a record five New Zealand tours since 1990, feels that from seaming tracks during his early trips years, the tracks became high-scoring hard ones during his last tour back in 2009.

“Of late, the Tests in New Zealand have been high scoring and surfaces have changed,” Tendulkar told PTI during an exclusive interview.

India will play five T20 Internationals, three ODIs and two Tests during the tour starting with the shortest format on January 24.

From 2002, when India played ODIs and Tests on green tops, to 2009, when India won only their second Test series in 32 years, Tendulkar has seen it all in New Zealand.

“I remember when we played in 2009, the Hamilton pitch was different compared to other pitches. Other pitches got harder (Wellington and Napier) but not Hamilton. It remained soft.

“But Napier became hard with passage of time (where Gautam Gambhir scored an epic match-saving 12-hour hundred in 2009). So, from my first tour (in 1990 till 2009), I realised pitches got harder with passage of time,” Tendulkar said.

Tendulkar is confident that the Indian bowling attack, spearheaded by Jasprit Bumrah, has the ammunition to put New Zealand in trouble.

“We have a good bowling attack with quality fast bowlers as well as spinners. I believe we have the ammunition to compete in New Zealand.”

However, in Wellington, Tendulkar wants the team to be well-prepared to counter the breeze factor.

“Wellington, I have played and it makes a huge difference if you are bowling with the wind or against the wind. The batsman needs to be judicious in the choice of which end he wants to attack, it is very important,” he said.

Tendulkar said he would prefer spinners to bowl against the breeze.

“...the seamers bowling against the strong breeze need to be smart. So I would prefer that if there is strong breeze, let the spinner bowl from that end and from the opposite end, the fast bowler bowls with the breeze behind him,” he said.

The maestro is confident that Rohit Sharma's white ball experience will hold him in good stead in the Tests as well, an assignment that has been kept for the last leg of the trip, which begins with five T20 Internationals from January 24.

“The challenge would be to go out and open in different conditions. I think Rohit had opened in New Zealand in ODIs and has been there quite a few times, he knows the conditions well. Eventually, Test cricket is Test cricket,” he said.

“But all depends on surfaces that they provide. If they provide green tops, then it's a challenge.”

There is no Bhuvneshwar Kumar or Deepak Chahar in limited-overs series but Tendulkar is not ready to press the panic button.

“Injuries are part and parcel of the game when you play and push your body to the limits.

“When you play for your country you need to give your best and while you give your best, you can get injured. That's okay,” he concluded.

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January 8,2020

Indore, Jan 8:  India skipper Virat Kohli has added yet another feather to his cap by becoming the fastest player to score 1,000 runs in T20I cricket as a captain. Kohli played an unbeaten knock of 30 during India''s seven-wicket win over Sri Lanka in the second T20I of the ongoing three-match series on Tuesday evening.

Kohli achieved the milestone of scoring 1,000 runs as captain in his 30th T20I inning. He is the second Indian and sixth overall after MS Dhoni to have achieved the feat. Dhoni had scored 1112 runs in 62 T20I games as captain.

Faf du Plessis (1273 runs from 40 games), Kane Williamson (1083 runs in 39 games), Eoin Morgan (1013 runs in 43 games) and Ireland''s William Porterfield (1002 runs in 56 games) are other captains on the list.

During India''s emphatic victory at the Holkar Stadium, Kohli also surpassed team-mate Rohit Sharma, who has been rested for the series, as the top run-getter in the T20Is. Kohli now has 2663 runs from 71 innings.

Both had finished 2019 as joint top-scorers in T20Is, with 2633 runs each.

India, already with an unassailable lead of 1-0 in the series, will now face Sri Lanka in the final T20I on Friday in Pune. The first match between the two teams was called off without a ball being bowled due to wet patches on the pitch in Guwahati last Sunday.

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May 9,2020

May 9: Filipina weightlifting star Hidilyn Diaz noticed live-streamed concerts were collecting money for coronavirus relief and was struck by inspiration: why not raise funds with an online workout?

Since then the Olympic silver-medallist -- and strong contender for her country's first Games gold -- has made enough money to buy food packs for hundreds of hard-hit families in the Philippines.

Diaz has done it all from Malaysia, where she was training to qualify for the now-postponed Tokyo Olympics when much of the world locked down against the virus in March.

"I thought (distribution) would be impossible because I'm not physically present," Diaz, 29, told news agency.

"It's a good thing that I have trusted friends and trusted family members who understand why we need to do a fundraising."

That circle of supporters has handed out the packages, which include vegetables, eggs and rice, to more than 400 families.

The food was bought with donations from about 50 people who joined sessions that lasted up to three hours, and gave them a rare chance to train with an elite athlete.

Diaz rose to fame in 2016 after snagging a surprise silver in the 53 kilogramme category in Rio, becoming the Philippines' first female Olympic medallist and ending the nation's 20-year medal drought at the Games.

Two years later, she won gold at the Asian Games in Indonesia.

However, her quest to qualify for Tokyo is on hold ahead of the Games' rescheduled opening in July 2021.

"I thought all the hard work would soon be over... then it was extended," she said. "But I'm still thankful I can still continue with (the training) I need to do."

Still, the lockdown broke her daily training regimen, keeping her away from weights for 14 days for the first time in her career.

"I felt like I was losing my mind already. I've been carrying the barbell for 18 years and all of a sudden it's gone. Those were the kinds of anxiety that I felt," she said.

But she got access to some equipment, and with her coach's urging, got back to work. She was relieved to find her strength was still there.

Instead of a Tokyo berth, the past months have been about a different kind of accomplishment for Diaz: helping her countrymen get through the coronavirus crisis.

Rosemelyn Francisco's family in Zamboanga City, Diaz's home town, is one of the first to get help from the athlete's initiative, and is deeply grateful.

Her family was not wealthy to begin with, and the pandemic has cost her husband his construction job.

"The food she donated has all everything we need, including eggs," said Francisco, 27.

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