### Prerequesite Materials:

__Newton's Three Laws of Motion__.

## Newton's 1^{st} Law

Every body continues at constant velocity, unless acted upon by an external force.

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##
Newton's 2^{nd} Law
$$\mathbf{F}=\frac{d\mathbf{p}}{dt}$$

The change of momentum of an object is proportional to the force impressed; and is made in the direction of the straight line in which the force is impressed. If the mass is constant, then $\mathbf{F}=m\mathbf{a}$

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## Newton's 3^{rd} Law

To every action there is always opposed an equal reaction; or, the mutual actions of two bodies upon each other are always equal, and directed to contrary parts.

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