Question

what is friction? what is fluid friction? what is rolling friction?​

Answer 1

Explanation:

Friction:- Friction is a resistance force between an object and the surface. Friction is a contact force.

Fluid Friction:- The resistance offered by fluids is called fluid friction.

Rolling Friction:- The friction acting when an object rolls over the surface of another is called Rolling Friction.

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Answer 2

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.

Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other.

Rolling resistance, sometimes called rolling friction or rolling drag, is the force resisting the motion when a body rolls on a surface. It is mainly caused by non-elastic effects; that is, not all the energy needed for deformation of the wheel, roadbed, etc., is recovered when the pressure is removed.