Wednesday, Oct 22, 2008 - Blocks 1 and 3

Collected RA 4.1

Went over Vector and Projectile Motion Test

Today we are starting a new unit. We are going to learns the ways of S I N (Sir Isaac Newton)

Introduced idea of inertia. How many people slept in over the 4-day weekend. If you did you were practicing good physics. An object at rest tends to stay at rest. You were exhibiting Galileo's idea of inertia which is so important it is Newton's First Law of Motion - the Law of Inertia.

An object at rest tends to stay at rest and an object in motion tends to keep moving in a straight line at constant speed unless acted on by an outside force.

Today you weren't able to sleep. An outside force acted on you to change your state of motion. Often this force is F = ma (your mother). But that's Newton's second law which will come a bit later.

Demos with railway tie. Showed inertia mini-lab demos. Students did mini-labs.

Homework - tell parents about what you did in class today and relate it to inertia.