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Chapter 1.4~1.5
Forces, Mass and Momentum
| Term | Definition |
|---|---|
| Friction | The force that two surfaces exert on each other when they rub against each other |
| Sliding Friction | When two solid surfaces slide over each other |
| Static Friction | Between two objects that are not moving |
| Fluid Friction | When a solid object moves through a fluid |
| Rolling Friction | When an object rolls across a surface |
| Gravity | A force that pulls objects toward each other |
| Mass | The measure of the amount of matter in an object |
| Weight | A measure of the force of gravity on an object |
| Inertia | Resistance to change in motion |
| Momentum | The quantity of motion of a moving body, measured as a product of its mass and velocity |
| Newton's First Law of Motion | An object at rest will remain at rest unless acted upon by a nonzero net force. An object in motion at a constant velocity will remain in motion unless acted upon by a nonzero net force |
| Newton's Second Law of Motion | An object's acceleration depends on its mass and the net force acting on it |
| Newton's Third Law of Motion | If one object exerts a force on another object, then the second object exerts a force of equal strength in the opposite direction on the first object |
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Bmacyscience
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