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
March 1,2020

New Delhi, Mar 1: Former Indian cricketer Mohammad Kaif on Sunday heaped praise on Ravindra Jadeja after the all-rounder took a spectacular catch on the second day of the Christchurch Test against New Zealand.

Jadeja grabbed a one-handed stunner at deep square leg in the 72nd over to dismiss Neil Wagner, who had to depart after scoring 21 runs.

"Sir Jadeja for a reason! Jadeja Airlines, flying high! Terrific stuff," Kaif tweeted.

In the match, Jadeja also impressed with the ball. The left-handed bowler took two wickets while giving away 22 runs.

On day two, India bundled out New Zealand on 235 runs in the second Test. However, in their second innings, Indian batsmen again struggled to tackle the New Zealand pacers and lost six wickets with a lead of just 97 runs.

India went to stumps at 90/6, with Trent Boult doing the majority of the damage with three wickets.

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News Network
February 24,2020

Feb 24: India captain Virat Kohli had no qualms in admitting that his team was outplayed by New Zealand in the opening Test but said they "can't help" if a few want to make a "big deal" out of the 10-wicket defeat. Hosts New Zealand thrashed India by 10 wickets at the Basin Reverse on Monday to go 1-0 ahead in the two-match series. This was India's first defeat in the World Test Championship, coming after two inept batting efforts. "We know we haven't played well but if people want to make a big deal out of it, make a mountain out of it, we can't help it as we don't think like that," the skipper said at the post-match media interaction.

Kohli said he fails to comprehend why one Test match defeat should be made to look like the end of the world for his team.

"For some people, it might be the end of the world but it's not. For us, it's a game of cricket that we lost and we move on and keep our heads high," Kohli said.

It is the acceptance of defeat that defines the character of a side, the world's premier batsman said.

"We understand that we need to play well to win, also at home. There's no cakewalk at international level as teams will come and beat you. You accept it and that defines our character as a side."

It is the acceptance of defeat that defines the character of a side, the world's premier batsman said. "We understand that we need to play well to win, also at home. There's no cakewalk at international level as teams will come and beat you. You accept it and that defines our character as a side."

If he had given credence to the "outside chatter", he said the team wouldn't have been where it is now.

"That's why we have been able to play this kind of cricket. If we would have paid attention to the outside chatter, we would again be at No. 7 or 8 in the rankings. We don't really bother about what people are saying on the outside," the skipper said.

One defeat can't make a team, which has been winning games of Test cricket, "bad overnight".

"If we have lost then we have no shame in accepting that. It means we didn't play this game well. It doesn't mean that we have become a bad team overnight. People might want to change our thoughts, but it doesn't work like that."

The self-belief is intact and Kohli was confident the team would come back stronger in the second Test, to be held in Christchurch in four days time.

"We will work hard, and after four days play just like we have played all these years. Just because we have lost one match in between all wins, doesn't mean that the belief is gone. The dressing room thinks differently and team atmosphere is different."

Kohli felt that there is a very thin line between being ultra-defensive and over-attacking, something that his team didn't get it right in this Test match.

"New Zealand got into the mind of the batsmen and make the batsmen do something that they don't want to. think that's a very thin line and a very delicate balance of when to attack and when to put bowlers under pressure which we failed to do in this match and there is no harm in accepting that."

According to Kohli, it was a combination of both good bowling from the Kiwis and Indian batsmen not putting the pressure back on bowlers, which led to the drubbing.

"That has got to do with partly good bowling from New Zealand and partly us not pressing that momentum on to them when required. "It was perfect for them because they bowled well and we allowed them to bowl well for longer periods rather than doing something about it in a partnership."

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News Network
February 14,2020

Los Angeles, Feb 14: Tributes to the late Kobe Bryant, the Los Angeles Lakers legend who died last month in a helicopter crash, will play a major role in Sunday's 69th NBA All-Star Game.

This year's annual showcase of league talent will be played in Chicago and feature numerous nods to Bryant, a five-time NBA champion who also matched a league record with four NBA All-Star Game Most Valuable Player awards.

Bryant, an 18-time NBA All-Star, died at age 41 on January 26 in a crash near Los Angeles that also took the life of his 13-year-old daughter Gianna and seven others.

All-Star teams guided by LeBron James of the Lakers and Greek star Giannis Antetokounmpo of the Milwaukee Bucks will compete to win each of the first three quarters, which will all start 0-0 and last 12 minutes.

At the start of the fourth quarter, the clock will be turned off and a final target score will be established by taking the leading club's cumulative score through the first three quarters and adding 24 points -- the number representing the jersey number worn by Bryant for the final 10 seasons of his NBA career.

The first team to reach the cumulative target score will win the NBA All-Star Game.

All-Star Game jerseys will also honor Bryant and his daughter.

Team Giannis players will wear jersey number 24 in tribute to Kobe while Team LeBron players will wear jersey number two, the number his daughter wore when playing youth basketball.

Both teams will wear jersey patches displaying nine stars, representing the nine people who were killed in the crash.

Academy Award-winning actress and Grammy Award-winning singer Jennifer Hudson, a Chicago native, will perform a special tribute to Bryant, his daughter and the others who were killed in the crash. Her performance will begin the night ahead of the player introductions.

James and Antetokounmpo each chose their squads from available starters and reserves voted and selected to the All-Star contest.

Team LeBron starters will include James, his Lakers teammate Anthony Davis, NBA scoring leader James Harden of Houston, Kawhi Leonard of the Los Angeles Clippers and Slovenian guard Luka Doncic of the Dallas Mavericks.

Team Giannis starters include the Greek big man, Cameroon stars Joel Embiid of Philadelphia and Pascal Siakam of Toronto and guards Kemba Walker of Boston and Trae Young of Atlanta.

A record eight All-Star Game players from outside the United States also include Frenchman Rudy Gobert of the Utah Jazz on Team Giannis and Team LeBron reserves Ben Simmons of Australia and the Philadelphia 76ers, Lithuanian Domantas Sabonis of Indiana and Serbian Nikola Jokic of Denver.

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