Force direction

Pull Direction

Push Direction

Force Direction of Gravity

Force Direction of Weight

Force Direction of Friction

Force Direction of Air Resistance

Force Direction of Upthrust

Balanced force

If an object stays still, it means

that the object has balanced force

Write and Do following quiz!

Note: please write the question and the correct answer on your notebook

A.Her weight and a reaction force from the ground

B.Her weight and a reaction force from the ground

C.The force of her opponent's hit on the ball and air resistance

1. A girl stands still holding a racket on a tennis court. A ball is coming towards her. Which two forces are balanced?

A.acts in the opposite direction to the movement

B.acts in the same direction as the weight

C.does not act at all

2. When an object falls, air resistance ....

A.newtons

B.kilograms

C.metres

3. Weight is a force and is measured in ....

A. The Earth

B. The Moon

C. You will feel equally heavy on both

4. Where would you feel heaviest?

A.Gravity only acts through air, not through water or land

B.Gravity does not act on aeroplanes flying in the sky

C.Gravity always acts towards the centre of the earth

5. Which of the following is TRUE?

A.Because gravity doesn't act through pavements

B.The pavement exerts an equal force in the opposite direction

C.Because gravity runs out

6. If gravity pulls you towards the centre of the Earth, why don't you fall through the pavement?

A.There are no forces acting on it

B.There are forces acting on it but these forces are balanced

C.There is just one force acting on it, gravity

7. When an object is at rest/stationary ...

A.Weight

B.Air Resistance

C.Friction

8. Study the picture below.The force direction shown by the arrow coloured with red( ) is....

A.A moving object carries on moving until a force stops it

B.A moving object eventually runs out of force and slows down

C.A moving object travels in a line until a force changes its direction

9. Which of these is FALSE?

A.Weight

B.Mass

C.Friction

10. Which of these is not a force?