Newton’s Laws

Key Vocabulary

Vocabulary	Definition
First Law	An object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.
Second Law	The acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.
Third Law	For every action (force) in nature there is an equal and opposite reaction.
Center of Mass	A position defined relative to an object or system of objects. It is the average position of all the parts of the system
Net Force	The vector sum of forces acting on a particle or object.

First Law Live Animation

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Explanation: The car in the animation is moving at a constant speed and there are no external forces acting on the car. Therefore, the car continues at a constant velocity forever.

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