Wait a sec, I was told American’s don’t use the metric system…
The imperial system doesn’t have any electromagnetism units that I’m aware of, so they borrow from SI.
I’m all for paying my electric bill in horsepower/hours. That feels very American. How many V8s is my house?
The apostrophe abbreviates the es (to 's) that used to be part of the English possessive (as it still is on some words that end s)
It’s a bit shit. Lots of people have trouble with it, lots of English as a second language people have trouble with not understanding what is replaced by the apostrophe