Friction is a non-contact force.

A force on a moving object ______ to the direction of motion will slow it down.

A ball thrown up comes down because of the _____ force.

(Friction/Pressure) _____ always opposes the motion of objects.

The force of _____ comes into play when a body slides over another.

Give reason for the following statement.

Knives and piercing tools have very sharp edges.

Give reason for the following statement.

Flat and broad feet of a camel help it walk on sand with ease.

Give a reason for the following statement.

Pieces of paper bits are attracted towards a plastic comb rubbed on the dry hair.