Force Quiz 3

Which of these changes can force bring?

• Shape

• Motion

• Direction

• All of the above

When you rub your hands together, they feel warm because of:

• Gravity

• Friction

• Air

• Cold

What kind of force helps a magnet pull a nail without touching it?

• Static

• Magnetic

• Muscular

• Rolling

Walking becomes difficult on smooth tiles because:

• Tiles are shiny

• There is more gravity

• Friction is less

• Weight increases

Friction is called a necessary evil because:

• It is always harmful

• It is always useful

• It has both good and bad effects

• It has no effect

If there were no friction, we would:

• Walk faster

• Fly

• Not be able to walk

• Walk smoothly

Ball bearings are used in machines to:

• Increase friction

• Reduce weight

• Reduce friction

• Increase speed

A man pushes a wall but it doesn’t move. Work is:

• Done

• Not done

• Partially done

• Finished

Why does a parachute fall slowly?

• Because of weight

• Because of gravity

• Because of air resistance

• Because of size

The force which acts without touching the object is called:

• Contact force

• Non-contact force

• Applied force

• Balanced force