2. Motion Presented by Mr. Saqib Taj Mr. Aqib Abbas

3. This lecture will help you to understand:  Motion  Types of motion  Newton’s First Law of Motion  Newton’s Second Law of Motion  Newton’s Third Law of Motion  Summary of Newton’s Three Laws

4. What is motion?

5. Definition :  A Body Is said to be in motion, if it changes its position with respect to its Surrounding OR  If a body continuously changes its position with respect to some observer, then it is said to be in motion.  A Body Is said to be in motion, if it changes its position with respect to its Surrounding OR  If a body continuously changes its position with respect to some observer, then it is said to be in motion.

6. Types of motion: There are three different types of motion. 1.Translatory Motion 2.Rotatory Motion 3.Vibratory Motion

7. Translatory motion This is the type of motion in which body moves along a line without any rotation.

8. Translatory motion can be divided further into three types.  Linear motion  Circular motion  Random motion

9. Linear Motion Motion along a straight line is called linear motion

10. Rotatory motion If a body moves in a circular path, it is called circulatory motion.

11. Random motion If a body moves in an irregular manner, its motion is called random motion

12. Rotatory Motion The spinning motion of a body about its axis or a fix Point, is called rotatory motion

13. Laws of Motion Introduction  Sir Isaac Newton was the first to formulate the laws of motion known as Newton’s laws of motion.  He was an English physicist and mathematician  Newton's Principia formulated the laws of motion and universal gravitation,laws of motionuniversal gravitation which dominated scientists' view of the physical universe for the next three centuries.

14. next Presenter Mr. Aqib Abbas

15. Newton’s First Law of Motion The law of inertia: Every object continues in a state of rest or motion of uniform speed in a straight line unless no external force acts on it.

16. What is inertia? Inertia of a body is its property due to which it resists any change in its state of rest or motion.

17. Inertia in Action Rapid deceleration is sensed by the driver who lurches forward.

18. Newton’s Second Law of Motion The law of acceleration: The acceleration produced by a net force on an object is directly proportional to the net force, is in the same direction as the net force, and is inversely proportional to the mass of the object.

19. Newton’s second law in equation form : small net force, large mass  small acceleration large net force, small mass  large acceleration Newton’s Second Law of Motion

20. Newton’s Third Law of Motion Law of action and reaction: Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first.