Write 2 methods to prevent friction.​...!!!!!!!!!!!!

Answer:

a) By polishing the surfaces, the friction reduces.

b) By using lubricants like oil, grease, etc...

c) By Streamlining

Friction due to to air is considerably reduced by streamlining the shape of the body moving through air. For example: jets, aeroplane and fast moving cars are given streamlined shape.

d) By using ball bearings in vehicles, sliding friction is converted into rolling friction which is much less.

Thanks