# Learning Newtons Laws

What are Newton’s Laws, why must things that go up come down, why is it when we throw some thing it eventually has to stop? This is all due to motion and design and natures forces. Motion and design is a multitude tests and experiments in which we leaned about Newton’s laws aerodynamics by using kne’x {a building device} with a self propelled propeller and wheels, we also learnt how the design can and will affect the motion {if the design is not aerodynamic there will be friction between the object and air which leads to drag.} So as my title state’s lets talk about Newton’s laws, wonder why they call it a law? Its because it is what motion will always do, it wont ever “break the law.” The first Law seems to violate everyday experience {also known as the law of inertia} state’s that “Once an object is at rest, it will stay at rest, and an object in motion will stay in motion, unless acted of by another force.” An example of this is when: a hockey puck is still it won’t just move by its self unless another force or object that is in motion moves it, and when some one hits the hockey puck it will be in motion, but object, and another force {such as Gravity, Friction, Inertia, and drag created by aerodynamics} can and will stop it.

Here is the scientific equation for it “F = m x a.” F stands for force, M stands for mass, and A stands for acceleration. So all together it adds up to Force = Mass x Acceleration. This can also apply to the second law. The second law states that “When a force acts upon an object, the object will start to move, speed up, slow down, or change direction in direct proportion to the magnitude of the force and inversely proportional to the mass of the object.” Here is a somewhat complicated example: imagine we are having a game of hockey, when someone hits the puck lightly to a teammate next to him it won’t go suddenly 10 yards, because he is hitting it lightly so it will move lightly, neither will it not move at all.

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When you hit the puck lightly it will move a short distance; if you hit it hard it will move a large distance, and so on it will follow this sequence even when you change direction. Finally Newton’s third Law states that “to every action there is always an opposite an equal reaction.” Here is another great example: when you jump you push down so an opposite thing happens and you go back up according to how much downward force you used. Here is another one, both of them are pushing against each other with the same amount of force so again the opposite happens and its like both are pushing a wall. Unless some one uses more force, and it is unbalanced, so one will fall and one will prevail! A arm wresle has to do with the same thing as shown above. I am simply trying to say that the design of an object affects its motion, but I can write on and on so I can not say this is the end either