1.-MOTION (1).pptx properties of motion, laws of motion

motion change of position with respect to a reference

1. MOTION And Its Three laws

2. Learning outcomes At the end of this lesson, you will be able to: investigate the relationship of the amount of force applied and the mass of the object to the amount of change in the object’s motion; Infer that when a body exerts a force on another an equal amount of force is exerted back on it; demonstrate how a body responds to changes in motion; relate the laws of motion to bodies in uniform circular motion.

3. PHysics A branch of science that deals with the study of matter and energy and their interactions

4. MOTION -is relative Motion is a change in position with respect to a frame of reference. -caused by unbalanced force

5. Sir Isaac newton Formulated the Three Laws of Motion - describe the relationship between the motion of an object and the forces acting on it

6. The three laws of motion

7. The three laws of motion Aka Law of Inertia or Law of Equilibrium Inertia – tendency of an object to keep doing what is already doing -Inertia is measured by an object’s mass, the greater the mass of an object the greater is its inertia Equilibrium – exists when all the forces acting on an object balance each other out (sum= 0)

8. The law of inertia

9. Practice 1. Which has more inertia –a six-wheeler truck or a car? 2. Which is harder to set into motion-tiger or its cub? Quick Review on Inertia: Yes or No 3. If the car stops suddenly, do you stop all of a sudden? 4. Are forces required to keep something from moving? Situational Analysis: 5. If there will be a race among a sumo wrestler, a midget, and an average guy, who will win the race?

10. The three laws of motion Acceleration is directly proportional to the force Acceleration is inversely proportional to the mass . Net force – sum total of all the forces acting on an object Aka Law of Acceleration

11. The law of acceleration

12. The law of acceleration Equations: F =ma a =F/m m= F/a

13. practice A huge stone is pushed with 30N of force and the stone’s mass is 88 kg. What is the acceleration of the stone? A car is being towed. If its mass is 1,750 kg and it accelerated at 5m/s², how much net force is involved? What is the mass of an object if it accelerated at 7.5m/s², and the force applied is 12.5N?

14. The three laws of motion It always involves two objects. It always involves two forces (action and reaction), these two forces occurs simultaneously, are equal in magnitude, and always opposite in direction Aka Law of Interaction

15. The law of interaction

16. Give your own examples of the applications of the laws of motion

17. Process questions: Describe the force needed to move: light object; a heavy object. Describe the motion of an object if: less amount of force is used to move it; great amount of force is used to move it. What are the possible effects of motion to an object?

18. Uniform circular motion

19. Uniform circular motion

20. The laws of motion and uniform circular motion

21. Process question How does the Uniform Circular Motion relate with: Law of Inertia; Law of Acceleration; Law of Interaction?

22. Learning outcomes You can now: investigate the relationship of the amount of force applied and the mass of the object to the amount of change in the object’s motion; Infer that when a body exerts a force on another an equal amount of force is exerted back on it; demonstrate how a body responds to changes in motion; relate the laws of motion to bodies in uniform circular motion.