When you play carom

a-What do you do to make the coins move smoothly on the board?

b-Name the type of force and explain your anwer with reason?

a- because we apply talcum powder which is a lubricant.we use the lubricants to decrease force of friction.

b-because if we dont apply powder the force of friction will appose the movement of coins and it would be very difficult to play a game of carrom board.