1. The problem statement, all variables and given/known data Why does friction act towards the center when a car does uniform circular motion by itself. 3. The attempt at a solution I know that centripetal force is needed to move an object in a centre and so there should be a force acting towards the center in the circular motion of the car. But I had also read that friction opposes the relative motion of 2 surfaces and so I think that friction should always act opposite to the tangential velocity of the car. For example, when i move a car linearly the friction opposes its linear velocity. Please help me and tell me why does friction act towards the center?