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199 mph
So close.
kph? Even if you don’t work with SI units, just don’t invent wrong ones. If lost, ask someone who knows. The correct abbreviation for “kilometers per hour” is km/h
While km/h is the official SI symbol, kph isn’t just “made up”. It’s a quite widely used unofficial abbreviation.
I don’t think my teachers would have been impressed with me in school if I claimed to be using the ‘unofficial spelling of words’ or citing ‘unofficial facts’. You either have one standard… Or none at all.



