Athena
4th Grade Kemmler
Paralympic High Jump
Hello I’m Athena and I'm here to talk about high jump so lets start with the history. High jump contests were popular in Scotland in the early 19th century , and the event was added into the first Olympics Games in 1896 for men. Women made their Olympic high jump in 1928. Jumpers wear skin-tight tank-tops and shorts,so the clothes didn't touch the crossbar. The Most important thing in the high jump uniforms are the shoes. Jumpers wear specially designed track and field shoes with thick soles and spikes. Jumpers must take off from one foot. A jump is considered a failure if the jumper touches the bar, or breaks the plane of the near edge of the bar before clearance. Competitors may begin jumping at any height announced by the chief judge, or may pass at their own discretion. Most jumpers jump at a 30 to 40 degree angle.
Newton’s first law of motion is that a body in motion and at rest will stay that way until a force is applied. Before the athletes start they are staying at rest. Then they apply force to the ground with their feet. This is how they move. It is a repeated cycle.
Newton’s second law of motion is that force equals mass times acceleration. You have to apply more force to go faster. Mass is what something is made of. If you have a ball it is lighter and doesn’t need as much force. If it is a spaceship you would need more force. When you are running you are getting closer to the pole. You have mass so you have to put more force on the ground so you can run faster. You need the ability to turn around and apply more force so that you can go up and over.
Newton’s third law of motion is that for every action there is an equal and opposite reaction. An example of this is when a 3rd grader and 4th grader run into each other. The 3rd grader would fall back because they do not have as much mass as a 4th grader. This happens when a jumper touches the pole. The bar that they failed to get over would wobble and have a different reaction than the athlete. When the athlete is running they are having a different reaction than the ground. They push force to the ground backwards and move forwards.