Just like the hanging magnet is pulling on the car, the car magnet is also pulling on the hanging apparatus. Unfortunately for the car, the apparatus is attached to it, so it all cancels out.

But only one word for all long stick-like things… Go figure

If your weight increased to 20x your current weight, without changing proportions, you would be about 2.7x your current height, width, and depth.

…just like OP’s mum.

I think you misplaced the apostrophe. If you think it’s just going to be one American I have some news for you.