General Knowledge - Basic General Knowledge - Discussion

Any object rolls when there is no friction. So, Sliding to Rolling is correct.

Any object roll when there is no friction.

Sliding friction is when objects such as a cube slide on their surface.

Rolling friction is when an object rolls such as a circular barrel, this type of friction includes lesser contact and is much better to sustain.

Dynamic friction is essentially sliding friction when objects rub together.

Static friction is the friction experienced by the object when it is at rest and the friction required to overcome before you move on to a different type of friction explained above.

I hope this helps everybody.

Thanks all for explaining.