What is the Speed?
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
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