1. Classical Mechanics

2. Newton’s First Law The Law of Inertia The NATURAL state of motion is to resist changes.

3. Newton’s Second Law A change in motion is caused by a FORCE

4. Newton’s Third Law If you PUSH on something, it pushes back

5. We Must Quantify Define Measure

6. ABCD How many numbers do we need to describe our POSTION in the Universe? A. One B. Two C. Three D. More than three

7. Position Coordinates describe position

8. Velocity

9. Acceleration

10. Acceleration

11. Newton’s Second Law Quantitative definition of Force F = ma Describes precisely how force modifies velocity

12. Mass Measures Mass Measures Force

13. Newton’s Third Law Forces come in pairs

14. Universal Law of Gravitation Objects with mass exert an attractive force on one another.

15. Gravitation The gravitational FORCE on near the Earth’s surface is A. less than B. greater than C. the same as the gravitational force on near the Earth’s surface.

16. Gravitation The FORCE that exerts on the Earth is A. less than B. greater than C. the same as the FORCE that the Earth exerts on.

17. Newton’s Second Law The ACCELERATION of would be A. less than B. greater than C. the same as the ACCELERATION of. If these were the only two objects in the Universe

18. Why do they land at the same time?