Question

pls answer me pls pls​

Answer 1

Answer:

1(b)relative motion

2(c)reduces

3(c)spring balance

4(c)drag

5(a)lubricants

Answer 2

$\bold{\underline{\underline{Part\:1→}}}$

$\dashrightarrow$ Friction is a force which opposes the relative motion between two surfaces in contact and it acts on both surfaces.

$\bold{\underline{\underline{Part\:2→}}}$

$\dashrightarrow$ Sprinkling power on carrom board reduces friction.

$\bold{\underline{\underline{Part\:3→}}}$

$\dashrightarrow$ A device used for measuring the force acting on an object is called spring balance.

$\bold{\underline{\underline{Part\:4→}}}$

$\dashrightarrow$ The frictional force exerted by fluids(gases and liquids) is called drag.

$\bold{\underline{\underline{Part\:5→}}}$

$\dashrightarrow$ The substances which reduce friction are called lubricants.

HOPE IT HELPS.