Types of friction are
1. Fluid friction-for example- Rowing your boat through the water
2. Sliding friction-for example- Cartilage against your bone.
3. Rolling friction- for example-Riding your bike or skateboard.
4. Static friction- for example-You trying to push a heavy bookcase.
5. Air friction-for example-A skydiver falling is affected by air friction or he would fall straight down in an instant