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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 |