I need help and need to know EVERYTHING about newtons laws, including what the third one is known as.?

Question

its for a class

Answer 1

Third Law: Law of Reciprocal Actions

All forces occur in pairs, and these two forces are equal in magnitude and opposite in direction.
The third law follows mathematically from the law of conservation of momentum.

http://en.wikipedia.org/wiki/Newtons_laws#Newton.27s_third_law:_law_of_reciprocal_actions

Answer 2

Well, the three laws are as follows.

1: Law of Inertia - The only way to change an object's velocity is by applying a force.

2: Newton's Second Law - F = ma

3: Weak Law of Action and Reaction - For every force that is exerted on an object, that object exerts the same force, only in the exact opposite direction.


To apply Newton's second law, you would draw a free body diagram of the given situation, sum up all the forces in the x and y directions, and set each equal to m*a.

Answer 3

Well, they all have to do with forces, for one thing. (Oh, by the way, a force is usually as simple as a push or a pull.)

Third Law of Motion: Every action has an equal but opposite reaction. Simple terms? A force cannot occur w/o another force on it. Example: When someone jumps in the air, they are pushing off the ground, but the ground is pushing back, which is how they have a point to jump from.

Second Law of Motion: If a force acts on an object, it will move in the direction of that force. Example: If there's a leaf on the ground, and the wind's blowing North, the wind will lift the leaf (in this case, the force is the wind) and carry it North, since that's the direction the wind is going.

First Law of Motion: An object at motion will stay in motion, and an object at rest will stay at rest. That is, UNLESS an unbalanced force acts on it. Example: An object in motion w/o any forces on it is very hard to give an example of on Earth. (wind, gravity, etc.) But in space, let's say an astronaut is floating around. He won't stop unless a force acts on him. This could be a cord he's attached to pulling at him, or hitting the side of his ship, etc. An object at rest (like the leaf I talked about in the second law) will stay at rest unless a force (like the wind in the second law) acts on it.

And they are simply known as Newton's First, Second, and Third Laws of Motion.

OUCH! Now my brain hurts...