Motion_ACCELERATION_MOTION GRAPH FREE FALL

EDUCATION

1. MOTION: Motion Graphs Meaning of positive & negative displacement Constant acceleration Free Fall

2. Motion Graphs Position-Time Graph, Velocity-Time Graph, Acceleration Time Graph

3. Motion Graphs 1. Position vs Time Graph t=10s X=10m t=15s X=15m

4. Motion Graphs 1. Position vs Time Graph t=10s X=10m t=15s X=15m

5. Motion Graphs 1. Position vs Time Graph t=10s X=10m t=15s X=15m

6. Motion Graphs 1. Position vs Time Graph t=10s X=10m t=15s X=15m Slope The slope in a graph gives an idea about the motion of an object

7. Motion Graphs 1. Position vs Time Graph Constant or uniform velocity; Zero acceleration

8. Motion Graphs 1. Position vs Time Graph Object is at rest; zero velocity

9. Motion Graphs 1. Position vs Time Graph Nonconstant velocity or changing velocity; accelerated motion

10. Motion Graphs 1. Velocity vs Time Graph V E L O C I T Y (m/s) Slope ( Acceleration )

11. Motion Graphs 1. Velocity vs Time Graph V E L O C I T Y (m/s) Constant or uniform acceleration; changing velocity

12. Motion Graphs 1. Velocity vs Time Graph V E L O C I T Y (m/s) Zero acceleration; constant velocity

13. Motion Graphs 1. Velocity vs Time Graph V E L O C I T Y (m/s) Nonconstant acceleration; increasing acceleration

14. Motion Graphs 1. Velocity vs Time Graph V E L O C I T Y (m/s) The object is decelerating

15. Positive & Negative Displacement Displacement is the change in position between an initial position and final position. Displacement is a vector quantity and so has a direction.

16. Positive Displacement Displacement is positive when an object moves in the positive direction. The final position will be further in the positive position than the initial position. t=10s X=10m t=15s X=15m

17. Negative Displacement Displacement is negative when an object moves in the negative direction. The initial position will be further in the positive position than the final position.

18. Constant Acceleration examples The  acceleration  of a particle is said to be constant if equal changes of velocity take place in equal intervals of time.

19. Constant Acceleration Stone dropped from a tower

20. Constant Acceleration Tennis ball thrown vertically upwards

21. Constant Acceleration Ball rolling on an inclined plane

22. Constant Acceleration Merry-go-round

23. Constant Acceleration Motion of Moon around the Earth

24. Free Fall A free falling object is an object that is falling under the sole influence of gravity. Any object that is being acted upon only by the force of gravity is said to be in a state of  free fall . Free-falling objects do not encounter air resistance. All free-falling objects (on Earth) accelerate downwards at a rate of 9.8 m/s/s

25. Acceleration due to gravity A free-falling object has an acceleration of 9.8 m/s/s , downward (on Earth). This numerical value for the acceleration of a free-falling object is such an important value that it is given a special name. It is known as the  acceleration of gravity  - the acceleration for any object moving under the sole influence of gravity. A matter of fact, this quantity known as the acceleration of gravity is such an important quantity that physicists have a special symbol to denote it - the symbol  g .

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