1. An Introduction to Forces
ICP

2. Aristotle (384 – 322 B.C.) Greek philosopher, scientist, educator
First to really systematize existing knowledge
He made observations and collected/organized all existing knowledge (some info was wrong and took centuries to disprove, like the sun travels around the Earth – which became part of church doctrine)

3. Copernicus (1474 – 1543)
Polish astronomer that was the first to say that the Earth and other planets revolve around the sun = heliocentric model
On the Revolutions, his book explaining the heliocentric model of the solar system, was printed and presented to him on his deathbed, on May 24, 1543

4. Galileo Galilei (1564 – 1642) Built first telescopes
First to discover mountains on the moon and the moons of Jupiter
Support Copernican theory of solar system – as a result was persecuted by Catholic Church and made to recant

5. Newton, Sir Isaac (1642 – 1727) He’s the man!
Invented Calculus, studied light: published Optiks
Was knighted in and is buried in Westminster Abbey
Laws of Motion

6. Albert Einstein E = mc2 Theory of Relativity
Theorized that there’s a unifying theory of the 4 known forces

7. Intro to Forces – 4 known Electromagnetism Gravity
Strong Nuclear Force (holds protons and neutrons together)
Weak Nuclear Force (responsible for radioactive decay)

8. FORCE
In simplest terms, a force is a push or a pull
Measured in Newtons (N)

9. NET FORCE
Net force is the summation of all the forces acting on an object

10. FORCES
Go to Smart Board for Force Diagrams