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Forces
| Term | Definition |
|---|---|
| Force | A push or a pull |
| Newton's first law | An object in motion will stay in motion unless acted on by an outside force |
| Newton's second law | force = mass x acceleration |
| Newton's third law | for every action there is an equal and opposite reaction |
| Friction | force which slows movement |
| Acceleration | force for moving |
| balanced forces | net force is zero |
| unbalanced forces | change in force |
| gravity | force that holds us to Earth |
| air resistance | force that occurs at terminal velocity |
| mass | the amount of matter in something |
| weight | the force of gravity on an object |
| constant speed | forces are balanced in a moving object |
| contact forces | need to be touching to work |
| non-contact forces | do not need to be touching to work |
| Newton Meter | measures the weight of an object (N) |
| Newton | unit of weight |
| Kg | unit of mass |