A merry-go-round moves in a circle at a constant speed. Is the merry-go-round accelerating? Explain your answer

Explanation:

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.

b.

developed countries have tended to improve the environment, while developing countries have tended to damage it.