1. Newton’s Laws of Motion
Physics I Class 03
Newton’s Laws of Motion

2. Important Notice

3. Newton’s Laws of Motion

4. What is a Force?

5. Forces Are Vectors - Adding Force Vectors

6. Newton’s First Law

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

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

9. Newton’s Second Law “F = ma”

10. Using Newton’s Second Law to Solve Problems

11. Free-Body Diagrams

12. Example Problem in 1D An Elevator Going Down

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

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

15. Class #3 Take-Away Concepts

16. Class #3 Problems of the Day

17. Answer to Problem 1 for Class #3

18. Class #3 Problems of the Day

19. Answer to Problem 2 for Class #4

20. Activity #3 Newton’s Laws in 1D

21. Class #3 Optional Material Are Newton’s Laws True?

22. Where Did Newton Go Wrong?

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