Why are objects in the side-view mirror closer than they appear?

quot;Objects in mirror are closer than they appear." That little line appears so often and in so many contexts, it's almost lost all meaning -- but why is it there, and what does physics have to do with it?

Why are objects in the side-view mirror closer than they appear

Objects in the mirror are closer than they appear hi-res stock

objects in mirror are closer than they appear in car side mirror

objects in mirror are closer than they appear.

거울에 비친 (geoul-e bichin) Meaning in English - English Translation

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