(adsbygoogle = window.adsbygoogle || []).push({}); 1) How and When do you multiply or divide or combine units?

2) Is there an intuitive understanding or experience for every permutation of derived units?

example:

distanceis a natural phenomenon we experience and understand intuitively as space between two points or positions

we've denoted the unit ofmetersto measure distance.

~~~

areais a natural phenomenon we experience and understand intuitively as space on a flat surface

we've denoted the unit ofmeters x metersto measure area.

~~~

volumeis a natural phenomenon we experience and understand intuitively as space in our 3D world.

we've denoted the unit ofmeters x meters x metersto measure volume.

~~~

massis a natural phenomenon we experience and understand intuitively as the amount of stuff that something has.

we've denoted the unit ofkilogramsto measure mass.

~~~

densityis a natural phenomenon we experience and understand intuitively as the amount of stuff that'sinside* some volume of space.

we've denoted the unit ofkilograms / (meters x meters x meters)to measure density.

*why inside? why not outside? what's governing how we even decide what density is?

~~~~~~~~~~~

what about... meters / kilograms?

or... kilograms x kilograms?

what would they describe? if anything?

so am i correct to conclude that all base units and derived units are put together in such a way as to describe only these phenomenons we intuitively understand and experience because if we didn't understand there's no way to describe it

~~~~~~~~~~~

but then how are 'derived units' DERIVED in the first place?

experiments?

how?

mathematically?

how?

~~~~~~~~~~~

thanks for your time to read this and

please help me understand!

and please provide some examples...

and please don't just send me to some link of long articles...

thanks again.

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# How/When to Combine units?

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