Question

Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play:
(a) only if the object is play
(b) only if the one of the two object is liquid
(c) only the one of the two object is gaseous
(d) irrespective of weather the object are solid gases and liquid​

Answer 1

Answer:

option . a......

Explanation:

.....

Answer 2

Answer:

The correct answer is a

please follow me