Newtons 1st Law: The Law of Inertia

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Newtons 1st Law The Law of Inertia
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Inertia

• The tendency of an object to resist a change in
  its state of motion.

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Force

• Something that causes a change in the state of
  motion of an object.

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Mass

• The amount of matter an object contains.
• A measurement of the inertia of an object.

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Weight

• A measure of the force of gravity on an object

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Law of Inertia (Newtons 1st Law)

• An object will maintain its state of motion
  unless there is a net external force on it.

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Net Force

• The vector sum of all forces acting on an object.