A bicycle works with rotating rubber wheels, drive chains and gears driven by pedals for speed, brakes to slow and handlebars to steer. The bicycle wheel also has spokes to distribute the forces of movement evenly around its center, or hub.
A:Usain Bolt ran the 100-meter dash in 9.58 seconds in 2009, which is an average speed of 10.44 meters per second. During the same run, in which he set the world record, he achieved a top speed of 12.27 meters per second, which is equivalent to 27.44 miles per hour.
A:Greg Louganis is a competitive diver and is widely recognized as one of the best divers in the history of the sport. During his career, he won a total of four gold medals and one silver medal while competing for the United States in the Olympics. He also won a number of gold medals in other major diving competitions.
A:Michael Jordan is widely regarded as one of the best professional basketball players. Among his other accomplishments, he won six NBA titles with the Chicago Bulls and set the league record by winning 10 titles. He also won five league MVP awards for the regular season and six for the postseason.
A:As of 2014, Kobe Bryant has been a player in the NBA for 18 years. In 1996, he was drafted directly out of Lower Merion High School in Ardmore, PA, a suburb of Philadelphia. The 2014-15 season will be the 19th year for the shooting guard.
A:Brooklyn Joseph, Romeo James, Cruz David and Harper Seven are the names of David Beckham's children. All four children are by his wife, former model and singer in the pop group Spice Girls, Victoria Beckham.
A:The Tour de France is a bicycle race that started in 1903. Riders compete for 21 days, and the race route and distance vary from year to year. The 2014 race had a total distance of 3,664 kilometers (or 2,276 miles), and it started in England and ended in Paris.
A:The average bicycle commuter travels at 10 miles per hour. Mountain bikers average 6.98 miles per hour over mountain trails. According to Bicycling, the average recreational road biker moves at 17 to 18 miles per hour over flat terrain and 9 to 10 miles per hour over mountainous terrain.
A:To fix a bicycle chain, remove the broken link, and then assemble the chain again. Use a replacement pin, or trim the chain with an outer plate with a pin on one end and a roller on the other, and snap the ends together.
A:Bicycle commuting requires finding an appropriate route, getting a bicycle that is in good condition and wearing the right clothing when cycling. It's important to eat a good meal beforehand to have energy for the commute.
A:The different kinds of gymnastics are women’s artistic, men’s artistic, rhythmic, trampoline, power tumbling and acrobatic. Women’s artistic and men’s artistic are the most popular forms of gymnastics and have the most participants. Events include the floor exercise, vault, uneven bars and parallel bars. Women’s gymnastics is considered a combination of flexibility, power and grace, while men’s gymnastics is known for displays of strength.
A:The game of rugby originated at the Rugby School of Rugby, England. The popularly held belief is that rugby was invented by William Webb Ellis in 1823. Although there is a lack of evidence to corroborate this widely accepted view, the Rugby World Cup was named the William Webb Ellis Trophy by the international committee.
A:Similarities between football and basketball include: two teams advancing a ball toward a goal on a measured playing surface with boundaries, offense and defense squads, penalties, four timed quarters, multiple scoring opportunities, referees and coaches. There are also numerous other ways these two sports are alike.
A:The metal ball used in adult men's shot put competition weighs 16 pounds, or 7.25 kilograms, while the ball used in women's competition typically weighs 8.8 pounds, or four kilograms. Shot putters tend to throw the balls with either the "glide" or the "spin" technique.
A:Volleyball rules state that players rotate clockwise each time service is won and remain there until it is gained back from the opposition. Beginning with the server in the back-right corner, players are designated positions one through six in a counter-clockwise rotation, with each position representing respective "zones" one through six.
A:Though the backflip was once considered a physically impossible and dangerous move, Caleb Wyatt proved that it was possible by successfully executing a flip on a motorcycle in 2002. According to ESPN, Wyatt was the first person to correctly execute a full backflip on a full-size motorcycle; another professional rider, Carey Hart, attempted a backflip in 2001, but didn't successfully complete the trick. After Wyatt's successful execution of the single backflip, what was once considered a dangerously impossible stunt became a standard part of freestyle motocross competition.
A:The sport of motocross was first developed in the United Kingdom, with the first official off-road motorcycle race taking place in 1924 in a British town called Surrey. At this point, motocross competition events were known as scrambles, with the sport as a whole referred to as scrambles racing. The motocross name grew out of a combination of the French word for motorcycle, "motocyclette," and the words "cross country," which described the outdoor racing conditions in which the sport typically takes place.
A:Supercross is a type of motorcycle racing that involves the use of off-road bikes on man-made dirt courses that are often held in a stadium or arena. Supercross riders must be skilled not only at maneuvering a motorcycle around sharp turns and at high speeds, they must also be capable of successfully negotiating the jumps that are built into the dirt track. Though supercross is very similar to motocross, the two sports are separate entities.
A:Funny cars are so named because they have some quirky features, such as the fact that the entire body of the car has to move in order to let a driver get in or out. These drag racing cars typically have a standard metal chassis over which a carbon fiber or fiberglass body shell is fitted.
A:There is a risk involved with professional, organized drag racing that takes place on a track, but given how many people have participated in these events over the years and how rare serious injury or death is, it can be considered a reasonably safe, though risky, activity. Drag racing is overseen by the National Hot Rod Association (NHRA), a professional organization which has implemented many safety standards for professional drag racers. The NHRA is particularly quick to respond with the implementation of new safety regulations after a fatal accident.
A:Funny cars are designed to be faster than the average automobile, and while each individual car may have its own unique horsepower output, funny cars are often seen traveling at speeds of more than 300 miles per hour. Horsepower capabilities for these racing cars are typically upwards of 6,000 HP, often maxing out around 8,000 HP.