# Learning Newtons Laws

October 23, 2012

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
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. 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