Ean
3rd grade Silva
Javelin
There are several Olympic sports played every four years. Javelin is one of them. To start, Javelin started in 708 BC. Javelin started in Ancient Greece. Javelin became an Olympic sport in 1908. Next, one thing you need is a spear. Another thing you need is a stop board. Finally, you have to throw the spear over your shoulder. And the tip of the spear has to hit the ground first. How you win is the person with the longest length over all rounds WINS! Javelin is very hard and it also shows many concepts of physics.
Javelin has many different forces at work. Forces are interesting. To start, an unbalanced force is something moving like a person when they move something is an unbalanced force. A balanced force is something not moving like the spear. Next, Newton's 1st Law says something at rest stays at rest until a force acts on it. Something in motion stays in motion until a force acts on it. Motion is an unbalanced force because it is moving. Rest is a balanced force because it is not moving. In the game the stop board is at rest until something hits it or someone picks it up. The spear is in motion when it is in the air.
To start, Newton’s 2nd law states: the greater the mass the greater the force to move it. Next, a force is a push or pull. An example is when you throw the spear in the sport of javelin. Mass is anything that has matter. An example is the athlete solid matter has more mass than gas matter and liquid because the particles are closer. Acceleration is a change in speed or direction, like the spear when it is in the air. Finally, the acceleration of the throw impacts the distance of the spear. With a forceful throw the spear will go farther. With a less powerful throw the spear will not go far. The mass of the player impacts the run by slowing them down. A smaller mass will speed them up. Speed is important because it gives you energy on the throw. Overall, Newton's second law can be seen throughout javelin.
Next, Newton’s third law. It states for every action there is an equal and opposite reaction. Next, is actions. One action is when you run. Another action is when you throw the spear in the ground. Finally,is the reactions to the actions. The reaction for running is you go forward. The reaction for throwing the spear in the ground is that the spear can fall out. One more action and reaction is when you throw the spear you can go backwards.Truly, physics can be seen throughout the world in javelin Obviously the sport of javelin is intense and fun. Newton's laws can be seen throughout every movement of this sport.