Physical Science about Aristotle Vs. Galileo

With this presentation you can learned about the free fall, projectile and motion graphs.

1. Module 3: Aristotle vs. Galileo

2. Aristotle- explained the behaviour of an object, such as a rock, in terms of the “essential nature” of that object.  For Aristotle, a non-measurable force existed within an object that compelled it to behave in a certain manner.  A stone, for example, was classified by Aristotle as a heavy object, while fire was defined as a light object . Aristotle’s- account of motion can be found in the Physics. By motion, Aristotle (384-322 B.C.E.) understands any kind of change. He defines motion as the actuality of a potentiality. Initially, Aristotle's definition seems to involve a contradiction. However, commentators on the works of Aristotle, such as St. Thomas Aquinas, maintain that this is the only way to define motion.

3. “Rocks will normally move downwards”.

4. According to Aristotle, the motion of physical bodies is of two types: natural motion and violent motion.

5. Free Fall

6. Three setups in Galileo’s experiment on acceleration and free fall

7. Projectile Motion

8. Aristotle -Initial impetus is supplied to an object, making it move a new region. Galileo -A projectile moves in constant horizontal motion simultaneously with a constant vertical acceleration.

9. Motion Graphs