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motion/force week 4
Term | Definition |
---|---|
friction | A force that opposes the motion of a body across a surface or through a gas or liquid. |
gravity | A force that exists between any two objects that have mass. |
speed: | Distance traveled per unit of time. |
velocity: | The speed and direction of moving objects. |
acceleration: | A change in the velocity (speed, direction, or both) of a body. |
deceleration: | slowing down |
Scale: | description of the relative size or amount of 2 or more things; a device used for measuring weight |
Resist: | to push or act against |
Kilogram: | metric unit for describing mass |
Attract: | to pull towards |