Question

where the friction nesessary 5 example​

Answer 1

friction was nessary while we are walking ,driving a car or bike ,running ,jumping,eating ,and many more things

Answer 2

when we rub our hands there is friction between our hands
when we travel on road by a vehicle there is friction between road and vehicle.
when we walk then there is friction between our leg and earth.
on rough surface.
any to between two objects have friction.
I hope this will helpful to ✌️✌️