I noticed that no one has blogged for a long time ... A week, actually? So I will blog for today's class because I can't remember that far back... Yesterday, however, the class was taken up by the spirit week event. Yay school spirit~

Anyway... In class, we went over the Chapter 7 Study Guide, Periodic Motion; CIRCULAR MOTION.
Answers: constant, changing, changing, constant, perpendicular, tangent, instantaneous velocity, length, direction, radius, centre, centripetal, directly, inversely, second, force, centripetal force, straight, and tangent.

That was the only paragraph we went over.

We then looked at the free body diagrams worksheet, you may refer to the "Free Body Diagrams-Circular Motion" slide uploaded by Ms K.

After that she wrote us an assignment to do from the "duck book" textbook.
Which was to read p. 202-206, and do problems 1-5 on page 206.
She also wrote - Note: derivation of formula on p.205

If you didn't bring a textbook home, here's one question you can try:
The outer edge of a 120-mm-diameter CD-ROM experiences an acceleration of 1.6 m/s². What is the speed of the CD-ROM?

Reading the textbook would really help, because it stated that
V = d/t (velocity equals distance over time)
can be modified to
V = c/t (velocity equals circumference over time).
And since C = 2πr (circumference equals two times pi times radius), therefore,
V = 2πr/t

So that's all we did in class. I believe our catapult projectile motion project has been pushed to Thursday because of the talent show tomorrow. Yay~

Next scribe is sonson. :)