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Physical Science
Term | Definition |
---|---|
force | push or pull |
distance | how far an object has moved |
speed | rate of change in position |
average speed | total distance divided by total time |
instantaneous speed | speed at any point of time |
inertia | tendency of an object to resist any change in motion |
centrifugal force | imaginary force that feels like it pulls outward |
centripetal force | net force exerted toward the center of a circle |
machine | device that makes work easier |
simple machine | device that does work with only 1 movement |
complex machine | combination of machines |
input force | force applied to the machine |
output force | force applied by the machine |
output distance | how far the resistance moves |
input | effort |
output | resistance |
work input | what we put in |
work output | what we get out of a machine |
mechanical advantage | number of times a machine multiplies effort force |
inclined plane | sloping surface used to raise objects |
ideal mechanical advantage (IMA) | number of times a machine should multiply force |
actual mechanical advantage (AMA) | number of times a machine actually multiplies force |