Q1. Is static friction between a non-moving object and surface? Or is it specific to velocity components? For example, there's a box sliding along a table. It's moving east at some velocity, and it's not moving at all in the north/west direction. If I push it in the north direction, and it doesn't move, does it resist that push with kinetic friction or static friction? I mean, since it has no velocity component in the north/west direction... Q2. How does a car turn? I know that static friction is the centripetal force, causing the centripetal acceleration, but where does the friction come from? It has to resist motion... What motion is it resisting? How?