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The men's javelin was redesigned in 1984 to shorten the distance it could be thrown. The decision to shorten the jav was made by the International Amateur Athletic Association after East Germany's Uwe Hohn crushed the previous world record of 99.72 m with a throw of 104.80 m. The distances reached by improving athletes were nearing the point where they could no longer be contained in the infield, and thus the decision was made to design the jav to "underperform." By shifting the center of weight forward, the javelin's tip tilts forward and comes down sooner, steepening the arc of flight and thus shortening the throws by about 10%. The javelin tip has also been changed to reduce the flight distance
All the records were modified down to reflect the change.
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How is the speed of a javelin measured?
The speed of a javelin is typically measured using a radar gun or a high-speed camera. The radar gun calculates the speed of the javelin as it travels through the air, while the high-speed camera captures the motion of the javelin to determine its speed.
What are four ways a 'wave' can be changed?
A wave can be changed by altering its amplitude (height of the wave), frequency (number of waves per unit time), wavelength (distance between wave crests), and speed (how fast the wave travels through a medium).
How are weight and time related?
Weight and time are not directly related. Weight measures the force of gravity acting on an object, while time measures the duration of an event or interval. Factors such as acceleration, speed, and distance can influence how weight and time might interact in a specific situation.
List two ways that humans have changed through time?
Evolutionary changes have resulted in humans developing larger brains and a more upright posture over time. Culturally, humans have developed complex languages, social structures, and technological advancements that have shaped our societies.
How does ice help in losing weight?
Ice can help in losing weight by increasing the body's energy expenditure through a process called thermogenesis. When you consume ice, your body needs to work harder to warm it up to body temperature, burning more calories in the process. This can contribute to weight loss over time when combined with a healthy diet and exercise.
