Thursday, Feb 12, 2009 - Block 2

Intro to motion lecture

Talked about the Greek view of the universe and how they thought force was needed to maintain motion. They could not imagine a world without air resistance or without friction. Galileo could.

Showed video clip of dropping a coin and feather in a vacuum, and also dropping hammer and feather on Moon.

Demo of dropping ball bearings in soap.

Galileo's thought experiments for air resistance and inertia.

Defined distance, displacement, speed, average speed, velocity, average velocity.

Gave students time in class to work on RA 2.1