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Laws of Motion


Newton's 1st Law of Motion

Newton's 2nd Law of Motion

Newton's 3rd Law of Motion

Friction

Circular Motion

Rockets

     

Newton's Laws of Motion are the three basic physical laws of classical mechanics. They describe the relationship between a body, the forces acting on it and the resulting motion.

Newton's first law states that a body will remain in rest or in motion unless acted on by an out side force. It is also known as the law of inertia since inertia is the resistance to changes in motion.

Newton's Second law states that a mass acted on by a force undergoes acceleration in the direction of the force, with a magnitude inversely proportional to the mass and proportional to the force.

Formula

f = ma

f   = force

m = mass

a  = acceleration

Newton's Third law states that for every action there is an opposite and equal reaction.  Put another way when you push on an object it pushes you back. This is the bases of rockets and jets.


These three laws along with gravity form the cornerstone of modern physics. Not much outside quantum mechanics makes since with out them. They affect every aspect of our lives and are involved in some way with every thing we do.

 The three laws are most evident in space flight. The 3rd law provides force to move a rocket, the 2nd law turns that force into acceleration and the 1st law keeps a space craft in obit or moving through deep space.

In conclusion Newton's Laws of Motion are the three basic physical laws of classical mechanics. They affect every aspect of our lives, in fact we use them every time we move.


 

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