What is a type of friction between air and another material called?
The friction between two stationary forces is called static friction. It is the friction that resists two objects to start moving against each other. Once in motion, the friction between two forces is called dynamic friction. Static friction tends to be greater than dynamic friction, which is why it takes more force to get a heavy box moving along the ground compared to keep it going.
This is one form of the property called friction. It is not a kinetic force, but opposes a force. It is caused by the interaction between molecules of the interacting surfaces. When motion occurs between surfaces, friction may convert mechanical energy to thermal energy (heating). For some surfaces, notably liquids, it can be much less than others, notably rough solids. There are different types of friction, and rolling friction is usually less than sliding friction…
When two objects are moving relative to one another while rubbing together, the frictional force between them is called kinetic friction. On a force diagram, the frictional force always points opposite the direction of motion between the objects, resisting the movement. Kinetic friction (Fk) can be described using the equation: Fk = μn Otherwise known as "sliding friction"