Anthony
4th Grade Neville
Olympic Handball
Handball is like soccer, football, and basketball mixed with each other. Here's more on Handball. Handball originated towards the end of the 19th century in Germany and was added to the Olympics in 1936. It is a contact sport in which attackers and defenders are permitted to make body contact with an opponent, making it a very physical and demanding sport for the players involved. Offensive strategies are even encouraged, as passive play is illegal. Endurance and strength are therefore vital qualities for the players; however, this sport also involves tactics, teamwork and flexibility, as all players alternate between attack and defense. The court size is 40m by 20m and there are two teams of seven. Players can take up to three steps without dribbling and are allowed to hold the ball for a maximum of three seconds. The team with the most goals at the end of the two 30-minute halves wins.
Newton’s 1st law is when an object is at rest it will stay at rest unless an unbalanced force moves it and an object in motion will stay in motion unless stopped by a balanced force. Newton's first law is inertia. There are forces like: Tension force, A force that is transmitted through a string, rope, cable or wire when it is pulled tightly by the object on the opposite end is a tension force. This force flows across the length of the wire or rope. Gravitational force, The bigger the mass the more of a gravitational force it has and if somethings bigger the slower it gets and the skinnier something is the faster it runs and why something doesn't just float by itself like a rock it’s because the earth is big enough to have its own gravitational field. Spring force, it wants to stay in its original position so if something stretches a spring it will return to its normal position. Buoyancy force,it is an upward force on liquid like a buoy or a boat. Frictional force, it is a force that works when things rub [that includes air]. An unbalanced force is when an object is moving. That is some of the forces. A balanced force is when an object is not moving. An example of unbalanced forces in handball is the ball when it is in the air and an example of a balanced force in handball is the goal before it is moved by the ball. That is Newton’s first law of motion.
Newton's second law is about F=m✕a. That means force equals mass times acceleration. Acceleration means to gain or loose speed. So when a ball rolls for a while it starts to lose speed, that is one part of acceleration. The other part of it is if a ball is rolling down a hill it gains speed that is what acceleration is. An example in handball is when a player runs they start to accelerate[gain/loose speed]. Mass is the matter of something. Think of a bowling ball, it's heavy right? That's because it has closer atoms and more matter so its mass is big. An example in Handball is the ball is small so the mass is small. Force is a push or pull and it’s mostly contact force, muscle force, and gravitational force that is used in my sport. An example when contact and muscle force is used is when a person throws the ball. An example when gravitational force is used is when someone throws the ball and it falls to the ground. That's Newton’s 2nd law of motion.
Newton's 3rd law of motion is about how every action/force has an equal opposite reaction. Action is a force that has an equal reaction. An example of action in my sport is an athlete running, the athlete pushes back on the ground and the reaction is them getting pushed forward. Another example is when they jump the push down and get forced up. Reaction is the equal opposite of an action. When the ball in handball hits something it goes the opposite way. If the handball bounces it falls to the ground and the reaction is it tries to go up the equal height but gravity keeps pushing it down. Actions and reactions are both equal. Think of a seesaw if it goes up one foot the other side will go down one foot. Something more about actions and reactions is that a force going one way will have a reaction trying to make it go the opposite way. That is Newton’s 3rd law of motion.