A few more circular motion oddities:
The Most Mind-Blowing Aspect of Circular Motion (see it in slow motion at minute 11:10)
All Things Physics
Coriolis Effect (see it in slow motion at minute 00:50)
TSG Physics
8.01x - Lect 24 - Rolling Motion, Gyroscopes, VERY NON-INTUITIVE (see both demos, at minute 22:18
, and 35:15
)
Lectures by Walter Lewin. They will make you ♥ Physics.
The only reasonable explanation to all these is that the circular motion was one of those unbaked features, released without proper testing. Later, all the reported bugs of physics were proclaimed features, and never to be fixed, so to not break the backwards compatibility for the time travelers.