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Centripetal Acceleration 1. A rope attaches a tire to an overhanging tree limb. A girl swinging on the tire has a centripetal acceleration of 3.0 m/s'. If the length of the rope is 2.1 m, what is the girl's tangential speed? 2. As a young boy swings a yo-yo parallel to the ground and above his head, the yo-yo has a centripetal acceleration of 250 m/s . If the yo-yo's string is 0.50 m long, what is the yo-yo's tangential speed? 3. A dog sits 1.5 m from the center of a merry-go-round. The merry-go- round is set in motion, and the dog's tangential speed is. 1.5 m/s. What is the dog's centripetal acceleration? 4. A race car moving along a circular track has a centripetal acceleration of 15.4 m/s'. If the car has a tangential speed of 30.0 m/s, what is the dis- tance between the car and the center of the track