1. IPC

2. Newton’s 1st Law of Motion Newton’s 1st Law of Motion – Objects in motion will stay in motion and objects at rest will stay at rest…unless a force acts on them. The ball will stay at rest (not move) unless the dog moves it.

3. Newton’s Second Law of Motion Newton’s Second Law of Motion - "F = ma: the net force on an object is equal to the mass of the object multiplied by its acceleration. You bunt – the ball doesn’t go far. You swing hard (more force), the object accelerates faster.

4. Newtons Third Law of Motion Newton’s Third Law of Motion - To every force or action, there is always an equal and opposite reaction. The cannon has a backward kick when it is fired.."

5. Question What makes an object difficult to stop?

6. Momentum

9. Question A ball of mass 2 kg. is moving with a speed of 4 m/s. What is its momentum?

10. Answer A ball of mass 2 kg. is moving with a speed of 4 m/s. What is its momentum Momentum = (mass)(velocity) = (2 kg)(4 m/s) = 8 kg m/s

11. Mass More mass means more momentum Twice the mass means twice the momentum.

12. Law of Conservation of Momentum For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision MV = MVisolated system

13. Centripetal Force Centripetal Force- force directed towards the center of the circle for an object moving in a circular motion.

14. Centripetal Acceleration Centripetal Acceleration – Acceleration toward the center of a curved or circular path.

15. Friction Friction - when 2 objects rub together. It generates heat. Example (rub your hands together)

16. Sliding Friction Sliding Friction- is when two objects are rubbing against each other. Putting a book flat on a desk and moving it around is an example of sliding friction. Have you ever pushed a box before.

17. Rolling Friction Rolling friction- is the resistance that occurs when a round object such as a train rolling on a track or a ball rolling on a surface.resistance

18. Air Resistance Air resistance – Like turbulence…….objects slowing down in the wind. Running into the wind.

19. Weight Weight – Changes with gravity. It Is different on every planet.

20. Mass Mass – Always remains the same. Triple Beam balance can measure mass.

21. Law of Gravitation Law of Gravitation - states that any two objects exert a gravitational force of attraction on each other. The moon’s gravitational force causes tides.

22. Gravity Constant Gravitational Acceleration (gravity constant) – 9.8 m/s 2 (If you get thrown out of a plane, you will accelerate to the eart at 9 m/s 2 )

23. Projectiles Projectiles – Objects that are launched and fly through the air (bullets, missiles)

24. Static Fricton Static friction - Static friction is a force between two objects that are not moving relative to each other.