Newton's Laws of Motion
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Newtonian or Classical Mechanics
I shall explain here Newton's Laws of Motion and the basics of Newtonian Mechanics.
Table of Contents: Newtonian Mechanics
- Newton's Laws of Motion
- Physics Books
- Some Maths
- Momentum
- The Big Bang Theory
- Related Physics and Maths Articles
- Featured Lensmaster
- Newton's Second Law Explained
- Newtonian Mechanics
- Physics Stuff on CafePress
- Who was Sir Isaac Newton?
- Relativity
- All About Me
- Please Leave Some Feedback
- Please Twitter Follow AndyPo
- Some Related Articles
Newton's Laws of Motion
Newton's Laws of Motion
LAW I
Unless a resultant force acts on a body, its velocity will not change
If F = 0, then Δv = 0
(Law I is actually just a special case of Law II)
LAW II
The rate of change of momentum of a body is proportional to the resultant force that acts on the body
d
F is proportional to ---(mv)
dt
or
d
F = k ---(mv)
dt
LAW III
If a body A exerts a force F on another body B, then body B exerts a force F on body A of the same size, along the same line, but in the opposite direction.
FAB = -FBA
Physics Books
Some Maths
Momentum
Momentum p = mv
Momentum is a vector (is has magnitude and direction) and the change in momentum is found by vector subtraction:
Δp = (final momentum) - (initial momentum)
The Big Bang Theory
DVDs of the Hit TV Show
Related Physics and Maths Articles
Newton's Second Law
Newton's Second Law Explained
LAW II
The rate of change of momentum of a body is proportional to the resultant force that acts on the body
d
F = k ---(mv)
dt
where k is a non-dimensional constant.
or F = ma
where a = is the vector, acceleration m/s^2
F is measured in Newtons
m = mass in kg
and k = 1
Newtonian Mechanics
Who was Sir Isaac Newton?
Relativity
All About Me
Please Leave Some Feedback
Please try my Simple Science Quiz too...
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Margo_Arrowsmith
Dec 6, 2010 @ 4:36 pm | delete
- I actually understood some of that!
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ElizabethJeanAllen
Dec 5, 2010 @ 12:49 pm | delete
- I teach physics and physical science. Newton's Laws are basic concepts but the kids always seem to have trouble with then. I've never understood that.
Thanks for sharing.
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AndyPo
Dec 5, 2010 @ 1:33 pm | delete
- Thanks very much. I think I need to add a few more diagrams and examples. What seems easy to us does indeed seem to confuse. I too have taught physics, although just as a private tutor - I was never a school teacher (despite most of the rest of my family being physics, maths or biology teachers and lecturers) I have more recently been teaching the physics of silicon chip design (i.e. solid state physics, quantum tunneling, 3D modeling of electromagnetic fields etc.) but in a more commercial role. I think Newton's laws are best explained to children with experiments. When something is fun it is so much easier to learn from it.
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fenellashorty
Jul 7, 2010 @ 2:39 am | delete
- Very useful introduction to the laws of Newtonian mechanics
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