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Forces & Motion
Forces and Momentum Vocabulary
Term | Definition |
---|---|
Force | a push or a pull on object that may change the motion of the object |
Balanced Force | Forces are equal on all sides; DOES equal zero Newtons; an object's motion WILL NOT CHANGE |
Unbalanced Force | Forces are not equal; Does NOT equal zero Newtons; an object's motion WILL CHANGE |
Net Force | the overall force on an object ; |
Newtons | the units used for force (N) |
Mass | the amount of matter in an object |
Gravity | a force that pulls all objects that mass toward one another |
Friction | a force that resists motion when two surfaces are touching |
Motion | any change in the location of an object |
Isaac Newton | the scientist credited with the three laws of motion |
Newton's 1st Law | An object at rest will remain at rest and an object in motion will remain in motion; until acted upon by an outside force |
Newton's 2nd Law | The force of an object is equal to its mass multiplied by its acceleration |
Newton's 3rd Law | For every action there is an equal and opposite reaction |
Inertia | an object's tendency to resist a change in motion |
Speed | the distance an object travels |
Average Speed | the total distance an object travels divided by the total time traveled |
Momentum | Mass of an object in motion |
Formula for Force | Force=mass X acceleration |
Formula for Momentum | Momentum= mass X velocity |
Formula for Work | Work=force X distance |