Acceleration is a change in velocity. ... Thus you can change the velocity by changing either the speed or the direction (or both). On a merry-go-round, you are moving at a constant speed but you are continually changing direction. Hence you are accelerating because the velocity is continually changing.
Yes, the merry-go-round is accelerating. Acceleration is a change in speed, direction, or both. Even though the speed of the merry-go-round does not change, its direction constantly changes as it spins.
