Question

B
What is friction ? How is it useful as well as harmful ​

Answer 1

Answer:

the force is called as friction

Answer 2

Answer:

Friction

Friction is a force that holds back the movement of a sliding object.

Friction can be useful.

For example: friction between our shoes and the floor stop us from slipping. friction between tyres and the road stop cars from skidding.

Friction can also cause problems in a car. Friction between moving engine parts increases their temperature and causes the parts to wear down.