1. Newton’s Laws of Motion
Physics I Class 04
Newton’s Laws of Motion

2. Newton’s Laws of Motion

3. What is a Force?

4. Forces Are Vectors - Adding Force Vectors

5. Newton’s First Law

6. “Consider a body on which no net force acts…”

7. Under the condition that no net force acts on a body...

8. Newton’s Second Law “F = ma”

9. Using Newton’s Second Law to Solve Problems

10. Free-Body Diagrams

11. Example Problem in 1D An Elevator Going Down

12. Newton’s Third Law: “Action and Reaction”

13. Newton’s Third Law Pairs: How to Recognize Them

14. Class #4 Take-Away Concepts

15. Class #4 Problems of the Day

16. Answer to Problem 1 for Class #4

17. Class #4 Problems of the Day

18. Answer to Problem 2 for Class #4

19. Activity #4 Newton’s Laws in 1D

20. Class #4 Optional Material Are Newton’s Laws True?

21. Where Did Newton Go Wrong?

22. If the Second Law isn’t true, why do we still use it?