This video of is a good example of how little movement is needed to ride and turn on an EUC.
Video of a rider (Dawn Champion) taking turns at 30 to 50 mph:
It may help with a simple example, like the spinning space station example posted earlier. The "floor" of the space station exerts a centripetal force on the astronaut, and the reaction to that centripetal acceleration results in a reactive centrifugal force exerted onto the "floor" of the space...
A clip of Stompy Jones cover of The Train Kept-A-Rollin at Carnation Plaza from around 2015. Disneyland had big | swing bands on Saturday nights for over 60 years (that stopped with Covid). You'll probably need to turn up the brightness.
Stompy Jones - The Train Kept A Rolling
Some modern stuff being used there. She's wearing ear buds for voice monitor, and the drums are mostly controller pads (MIDI). Keyboard is standard, sounds coming from the keyboard as oppose to a keyboard controller hooked up to sound modules or later laptops with sampled sounds. This snippet...
I recall those songs, but I've lived in Los Angeles | Orange County since 1975, and I never heard an ABBA song in any of the discos I went to (Bahama Mamas, Destiny II, Starwood, Crescendo, Tin Lizzies, Foxhunter, McConaheys, City Lights, ...) or even venues that had DJ's in addition to other...