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Work is done only when a ____ (the push) causes a change in the position or motion of an object in the direction of the applied force.
___ us calculated by multiplying the ____ by the ___ over which the force was applied.
Work, Force, Distance
Because work is calculated as ____ times _____, it is measured in units of newtons times, N*m
___ is called when scientist and engineers use a number that describes how much the force or distance is multiplied by a machine.
___ is a quality that measures how much a machine multiplies force or distance
___ is the rate at which work is done, that is, how much work is done in a given amount of time
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