If we're being pedantic, the "2k Km" is simply incorrect. See 6.1.5 here: https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-6-rules-and-st

If we're being pedantic, the "2k Km" is simply incorrect. See 6.1.5 here: https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-6-rules-and-style-conventions-printing-and-using https://www.nist.gov/pml/special-publication-811/nist-guide-... If it were Kelvin-meters, it would either be written "K m" or, preferred, "K·m"