Prerequesite Materials:
Newton's Three Laws of Motion.
Newton's 1st Law
Every body continues at constant velocity, unless acted upon by an external force.
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Newton's 2nd Law
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
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Newton's 3rd 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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