1. An object increases its angular velocity from 5.0 rad/s to 10.0 rad/s in 0.50s. What is the average angular acceleration of the objects? Select one. (a) 30 rad/s^2 (b) 20 rad/s^2 (c) 2.5 rad/s^2 (d) 10 rad/s^2 2. A child is on a 5.0 m radius merry-go-round at a carnival. The merry-go-round starts from rest, and 3.0s speeds up to an angular velocity of 0.20 Rev/s. At the moment the merry go around reaches the final angular velocity, the child accidentally lets go of her teddy bear, causing it to fly off. At the moment the bear is released, what is the tangential acceleration of the teddy bear in m/s^2? 3. A 0.35m(radius) car tire drives through a puddle of paint, completely covering the outside of the tire. It takes 5.0 complete revolutions for the paint to wear off. How long will the streak of paint be, in m, on the road