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Newton's Laws of Motion

simple rules for a physical universe

The First Law of Motion:

The velocity of a body remains constant unless the body is acted upon by an external force.

The Second Law of Motion:

The acceleration a of a body is parallel and directly proportional to the net force F and inversely proportional to the mass m, i.e., F = ma.

The Third Law of Motion:

The mutual forces of action and reaction between two bodies are equal, opposite and collinear.

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