Question

please answer fast..........​

Answer 1

Answer:

1 => A frictional force is an example of Contact force .

2 => Friction opposes the relative motion between the surfaces in contact with each other .

3 => Friction depends on the nature of the surfaces .

4 => Friction produces heat .

5 => Sprinkling of powder on the carrom board reduces friction .

6 => Sliding friction is less than static Friction .

7 => The body of the ships , birds and even aeroplane are streamlined .

8 => Friction causes wear and tear of moving machine parts .

hope it helps you