Definition of force

1. FORCE
D E F I N I T I O N

2. WHAT YOU WILL MEET
• Activities involving force
• Definition of force
• What force can do
• Objects that will move
• Objects that will not move

3. ACTIVITIES INVOLVING FORCE
• What activities involve force?
• There is plenty activities that involve force, the following are some of them:
 Kicking a ball
Pushing a chair
Opening the door
Pulling trees
Pushing walls

4. DEFINITION OF FORCE
• How can you define force from the previously mentioned activities?
• Does force only involve pushing?
• Does it only involve pulling?
• Does force always cause movement or not?
• From these questions, you can define force as a pull or push exerted on an object that has the
potential to cause a change in the state of motion of the object.

5. WHAT FORCES CAN DO
• From the previous activities, what can you say are some of the things that forces can do?
• You can compare your answers to the following:
 Making objects change position
 Making object change size
 Making objects change direction of movement
 Making objects move faster or slower

6. OBJECTS THAT WILL MOVE
• From the previous activities, can you say that objects will always move when a force is exerted
on them?
• Give some examples of objects that will move when you exert simple force.
• You might have mentioned the following as some examples:
 Chair
 Ball
 Door
 Bicycle

7. OBJECTS THAT WILL NOT MOVE
• You have seen that not always and not all objects will move when you exert a force on them.
• Sometimes you exert force on objects but the force is not enough to make the objects to
move.
• Give some examples of objects that may require a lot of force for them to move, otherwise
you can not move them with simple force:
• Compare your answers with the following:
 Fixed trees
 Inert walls
 A tractor

8. END OF PRESENTATION
Thanks for reading!!!!!!!