1. The problem statement, all variables and given/known data A rock is wedged into the treads of a 15 in radius tire. The car to which it is attached is driving down the road at 70mph. What’s the angular acceleration of the rock? 2. Relevant equations ar=- [tex]\omega[/tex]02r 3. The attempt at a solution Not sure where to begin really, how does the car's speed influence the angular acceleration of the rock? What are the basic steps to take to set this problem up?