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Sasser S8P5a
Physical Science
Term | Definition |
---|---|
inertia | the tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the object |
mass | a measure of the amount of matter in an object |
gravity | a force of attraction between objects that is due to their masses |
friction | a force that opposes motion between tow surfaces that are in contact |
distance | an object travels is the length of the path it takes |
balanced forces | are two forces acting in opposite directions on an object, and equal in size |
unbalanced forces | are forces that cause a change in the motion of an object |
gravitational forces | is a force that attracts any object with mass. Every object, including you, is pulling on every other object in the entire universe! |
resistance | In electricity, a measurement of the difficulty encountered by a power source in forcing electric current through an electrical circuit, and hence the amount of power dissipated in the circuit. Measured in ohms. |
action force | force acting in one direction |
reaction force | force acting in opposite directions |
gravitational acceleration | is the acceleration on an object caused by force of gravitation |