The tire pictured below is rolling to the left at a constant speed without slipping on a horizontal roadway. What is the direction of the acceleration of the part of the tire that in contact with the road?
The acceleration of this part of the tore is zero.
The correct option is C up Objects or parts of objects that move in circular paths at constant speeds(uniform circular motion) are always accelerating toward the center of the circular path.
In this case, the part of the tire in contact with the road (the bottom of the tire) is accelerating up towards the center of the tire.