3. Forces Two things make up a force 1. its size, how strong a push or pull is, and 2. its direction, which way it pushes or pulls. We draw forces as arrows. 1. The length of the arrow shows how strong the force is and 2. way it points shows the direction of the force.

4. Balanced Forces produce NO change in Movement Unbalanced Forces Change the Speed and or Direction of Moving Objects Balanced and Unbalanced Forces The forces on the person are balanced The floor pushes upward on the person Gravity pulls downwards on the person Greater Force Smaller Force

5. Forces & Movement Forces are nearly always PUSHES and PULLS

8. Show the forces acting on the Owl sitting and reading Is the force acting on the Owl balanced or unbalanced?

9. Think about this situations If you were pushing these elephants to move… 1. Which will need more force to move? Why? 2. Which direction would they be travelling? Why? 3. Which elephant will move faster? Why?

10. Where are the forces acting on this clock

11. Where are the forces acting?

12. Where are the forces acting?

13. Where are the forces acting?

14. Where are the forces acting?

15. Where are the forces acting?

16. Where are the forces acting? Look carefully at the insect and the frog

17. Where are the forces acting? Look carefully at the motion of the ball