Force notes chap.2 1
- 1. May the force be with you.
- 2. Put the following Words in your Vocab. 1. Force 2. Newton 3. Net Force 4. Unbalanced Force 5. Balanced Force Pages 36-39
- 3. Daily Science 1.What is a force? 2. What is the difference between a balance and unbalanced force?
- 4. What is a Force? • A force is described by its strength and by the direction in which it acts. • A force is either a push or a pull • A force’s SI unit is called Newton. • Why is it called a Newton?
- 5. Combining Forces • What do you think it means when a force is combined? • A Combination of forces acting on an object is called a net force. • A net force determines an objects speed and direction.
- 6. When forces act in the same direction the forces can be added together: 5 5 10 N
- 7. • When forces act in an opposite direction they also combine a net force. • If one force is going in one direction and another force in the opposite direction all you do is subtract the forces.
- 8. • Example: 5N 10N = 5N Forces may even cancel each other out: 5N 5N = 0N
- 9. Unbalanced Forces • When there is a net force acting on an object, the forces are unbalanced. • This causes the object to move.
- 10. • Example’s of Unbalanced forces: Individual Forces Net Force Individual Forces Net Force
- 11. Balanced Forces • Equal forces acting on one object in opposite directions are called balanced forces. • The object’s motion does not change.
- 12. Example of a balance force: No Net Force
- 13. Any Questions?