Two children playing on a spinning merry-go-round take turns riding and pushing. the merry-go-round slows, stops, and then speeds up again as the children switch places. what best describes the motion of a third child who only sits and rides the merry-go-round?

An electron moves with a constant horizontal velocity of 3.0 × 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)