While driving your car you start to wonder about the relationship between the car's motion and the rotation of its wheels. At the moment, you are driving on a straight stretch of road at a constant speed of 60 mi/hr. You wonder what the corresponding angular velocity is for your wheels. You assume that they roll without slipping, and that it's okay to simplify things by thinking of the wheels as disks of radius 9 inches whose mass is evenly distributed. You guess that the mass of one of the wheels is about 10 kg.