Compute all parts of given question:
Question: The horse on a carousel is 3.5m from the central axis.
Part I: If the carousel rotates at 0.14rev/s, how long does it take the horse to go around twice?
Part II: How fast is a child on the horse going (in m/s)?
Please show me step by step or type in formulas used. I am so lost and express your answer using two significant figures.