I laughed a lot today, which I think is usually a good thing. It was all for the sake of education, of course. The W, L and O sections learned about forces today, balanced and unbalanced. I assigned Part 3 for HW tonight if you are checking at home. We went over HW, answered the $ question: what is the difference between velocity and speed? (It is that velocity includes a direction), and watched the end of the roller coaster video. Because I love that video, I have included a small clip from it. Here is a scene near the end where two young boys eat food and drink orange juice while riding a roller coaster. I don't advise doing this at home, but I do advise watching the clip several times and laughing. The video did teach us a lot about g forces; it wasn't all laughing.
The S section completed their lab on the velocity and acceleration of marbles. They did an excellent job and I was proud of them. It is a tricky lab. You have to time in intervals of one foot, five times each, for 8 different intervals. This allows us to graph velocity versus time. What we need is a photogate. What we have are several little red hand timers. Considering our resource, the students did great work.
Sweet justice.
