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
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