Tag: A 5.0-m-diameter merry-go-round is initially turning with a 4.5 seconds period.

A 5.0-m-diameter merry-go-round is initially turning with a 4.5 seconds period. What is the speed of a child on the rim?   Known variables: diameter (d): 5.0 meters period (T): 4.5 seconds velocity (v)= circumference / period Circumference (c) = π x d π x 5.0= 15.707 m v=c/T v= 15.707 m /4.5 s v= 3.5m/s