Physics Lessons

​Physics - Chapter 1

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​Density

Mass per unit​

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​Gravity

​A force that pulls objects toward each other

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​Matter

​Anything that has mass and takes up space

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​Weight

​A measure of the force of gravity on an object

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​Force

A push or pull exerted on an object

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​Mass

​A measure of the amount of matter in an object

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​Acceleration

​The rate at which velocity changes

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​Energy

​The ability to do work

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​Motion

An object's change in position relative to a reference point.

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​Physics

​The branch of science concerned with the nature and properties of matter and energy

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