1. A bike tire is rotating counterclockwise at 3.1 rad/s when it begins to slow down. A. If it comes to a stop in 0.67seconds, what is the angular acceleration of the tire? B. If instead the tire slowed down at a rate of 1.2rad/s2, how long would it take to reach a speed of 0.7 rad/s? 2. A bug is on a large platform that is spinning about a fixed axis at a constant angular speed. When the bug is 2.1m from the axis of rotation it has a tangential speed of 4.8m/s. A. What is the platform's angular speed? B. How far from the axis of rotation would the bug need to be to have a tangential speed of 2.9m/s