A yoyo is spun in a horizontal circle around a child's head because they have no idea how to actually use a yoyo. The yoyo revolves around the child's head 2 times in 8 seconds. The yoyo has a string which is 1.5 m long. What is the period of revolution of the yoyo around the child's head? How fast is the yoyo moving as it revolves? What centripetal acceleration will the yoyo experience as it revolves?