General Physics I Physics 1405 Second Class

1
General Physics I - Physics 1405Second Class

• Historical Development of NM I
• Aristotle
• Kinematics
• Define particle
• Position - Velocity - Acceleration
• Motion Diagrams
• Introduction
• Activity
• Demonstration
• Activity
• Lab Activity

2
Historical Development of Newtonian Mechanics I -
Aristotle

• 384 - 322 B.C.
• 4 Greek Elements
• Earth
• Air
• Water
• Fire
• Classification Scheme
• Natural Motion
• Up and Down Motion
• Circular Motion
• Violent Motion

3
HDNM I - AristotleNatural Motion

• Down Motion
• Falling objects
• Discussion
• Conclusion
• Up Motion
• Circular Motion - Celestial Motion
• Discussion
• Conclusion
• Ptolemy - 100 - 170 A.D.

4
HDNM I - AristotleViolent Motion

• Demonstration
• Push or pull on a cart
• Throwing an object
• impetus force
• Discussion
• Conclusion

5
Linear Motion or1-D Kinematics

• Particle - we will represent all objects as a
  single entity of no sizeable dimension, i.e. a
  point or a particle
• Kinematics Quantities
• Position - the location of an object
• Displacement - the change in position
• Velocity - the rate at which the position
  changes
• Average velocity
• Instantaneous velocity
• Acceleration - the rate at which the velocity
  changes
• Average acceleration
• Instantaneous acceleration
• Time

6
Motion Diagram

• Introduction and Purpose
• Why Motion Diagrams are Useful?
• Diagrammatic Representation of all the Kinematics
  Ideas
• Procedure - Drawing the Motion Diagram
• Constant time intervals
• Drawing positions
• Inferring the velocity
• inferring the acceleration
• Examples

7
Motion Diagram II

• Motion right or left
• Positive motion
• Negative motion
• Motion up or down
• Positive motion
• Negative motion
• Motion up or down an incline
• Positive motion
• Negative motion
• Air Glider Interactive Lecture Demonstration

8
Next Class

• HDNM 2 - Galileo
• Do Internet search on Galileo
• Continue Coverage of Kinematics and Motion
  Diagrams
• Turn in Introduction to Motion - Position Lab
• and Homework