The SI system uses meters as the base unit, but then you have millimeters, micrometers, nanometers, and so on.
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The distance the object moves long the distance.
"A force pair composed of two forces that are opposite in direction and equal in magnitude." - Glencoe Physics
The technical definition of 'work' in Physics is (force) times (distance).So I suspect the factors you're fishing for are force and distance.
define library filing
well it depends on what you are measuring your 'much' in. First thing is, a light year is a distance not a time. It is defined as the distance light would travel in the time of one human year. Now to define this: light travels at ~300000000ms-1 and there are 31536000s in one year, so light will travel: 300000000*31536000 = 9.5x1015 metres in one year (that is 95 followed by 14 zeros! so a long distance) so in 9.7 light years light will travel 9.2x1016 metres. Which is a very very long distance.