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Motion
Motion Vocabulary
Term | Definition |
---|---|
Motion | The changing of position or location |
Force | Making things move by pushing or pulling |
Inertia | A property that all things have because that they have mass |
Acceleration | An increase in the rate or speed of something |
Gravity | A force of attraction between objects that have mass |
Friction | A force that happens when objects rub against one another |
Air Resistance | A friction-like force that opposes motion of objects that move through air |
Speed | A distance traveled per unit of time |
Velocity | The speed of an object in one direction |
Sir Isaac Newton | Scientist who created 3 Laws of Motion |
Newton's 1st Law | An object in motion stays in motion; an object at rest stays at rest unless acted on by an outside force |
Newton's 2nd Law | A force, acting on an object, will change its velocity by changing either its speed or its direction or both. |
Newton's 3rd Law | For every force and action, there is an equal and opposite reaction. |