1. Static friction: This is the friction that resists movement when two objects are not moving relative to each other.
2. Sliding friction: This is the friction that resists movement when two objects are moving relative to each other.
3. Rolling friction: This is the friction that resists movement when an object rolls along a surface.
4. Fluid friction: This is the friction that resists movement when an object moves through a fluid.
5. Air friction: This is the friction that resists movement when an object moves through a gas.
