1. Definition of Motion
With your table group, come up with a definition for MOTION and write it onto the guided notes.

2. Aristotle 384-322 BC Old Greek Philosopher He lived from 384-322 BC
He studied from Plato in his academy for 20 years
He became the tutor of young Alexander the Great

3. Aristotle on Force
A force is required to keep an object moving
2000 years pass….

4. Alexandrian Conquest

5. Roman Conquest

6. Crusades

7. Dark Ages

8. Galileo 1564-1642 Lived from 1564-1642 AD
He made a big discovery that proved Aristotle was wrong
Dropped two weight objects and they both landed at the same time
So Aristotle must have been wrong about forces being necessary to keep objects moving.
Galileo said that force is required to START an object moving, but none is required to keep it moving
(when there isn’t friction)

9. Inertia Objects in motion want to stay in motion
Objects at rest want to stay at rest
Unless acted on by another force.

10. Mass and Inertia Mass is actually a measurement of inertia.
More mass = more inertia
Less mass = less inertia

11. Check it out… https://www.youtube.com/watch?v=vfnt8Sdj7cs
Inertia Demos:
Redo inertia “magic trick” with hoop and pennies/dice
Paint stick and newspaper karate chop
Hammer and bowling ball
Card and poker chips
Magic Broom
Meter vs Newton-Meter drop

12. Lesson Recap A ball rolling on a pool table slowly comes to a stop.
How would Aristotle explain this behavior?
How would Galileo explain it?
How would you explain it?

13. Reaction Time Activity
Work with partner at table group
Record distance in centimeters and convert to METERS
In your analysis---EVERY number needs a unit!
Discuss the discussion questions
Your calculations should be done in METERS
Done early? Do the extra challenge!