#1

It is a force that opposes the movement of one surface over another.

#2

It slows down a moving object and eventually stops it.

#3

Heavier objects experience greater frictional forces when it moves.

#4

An object experience more friction when it moves on a rough surface.

#5

It increases with surface area of contact.

#6

It is advantages because it helps to stop moving objects (brakes of a car).

#7

It is advantages because it enables us to help a firm grip on surfaces (rubber handgrips)

#8

It is disadvantages because effort is required to overcome frictional forces (engine).

#9

It is disadvantages as things get worn out because of friction (shoes)

#10

Wheels and lubricants can be used to reduce friction.