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Science Unit 15-1
Term | Definition |
---|---|
a push or pull, which may cause a change in an object's motion | force |
a force that acts between two touching objects and that opposes motion | friction |
forces that cancel each other out because they are equal in size and opposite in direction | balanced forces |
forces that cause a change in an object's motion because they don't cancel each other out | unbalanced forces |
the force of attraction between objects, such as the attraction between Earth and objects on it | gravity |
measure of the force that gravity exerts on an object | weight |
the speed of something in a given direction | velocity |
exert force in order to move someone or something away from oneself or the origin of the force | push |
exert force, typically by taking hold of someone or something, in order to try to move them toward oneself or the origin of the force | pull |
a vehicle's capacity to gain speed within a short time | acceleration |
the amount of matter in something | mass |
a tool that is used to measure the size of a force | spring scale |