9/29/10

Let the Sunshine In

At least for today. Tomorrow, we're back into the wet and rainy...

Honors Physics took their Chapter 3 exam and the results were interesting. For all of the turmoil about the mathematics part, where some folks didn't fare well was in the basic information. Make sure that when you prepare for a physics test that you budget time for both the content and the mathematics. The test will always have both and one cannot be neglected for the other. Tomorrow, we take up a new topic - Forces!

Physics B and F endured their Projectile Motion exams, then looked ahead towards our work with forces. We've just been concentrating on describing motion; now we tackle the bit of nature that starts, stops and changes the direction of motion. We'll look at various specific forces during the year like gravity, friction, electric force, etc., and you'll they all boil down to pushes or pulls that affect matter's motion.

Physical Science spent time looking at graphs that presented accelerated motion. For a position-time graph, you'd see a curve. For an velocity-time graph, we'd expect a linear relationship for constant acceleration. A velocity-time graph gives me the ability, as well, to calculate the value for that acceleration (the slope of the line) and the displacement (the area under the curve). We'll go over this sheet tomorrow before you take your velocity and acceleration quiz.

Homework:

Honors Physics, Physics B and Physics F: Read 4.1 and complete #1-3, 5, 6 of the 4.1 Section Review
Physical Science: Complete the Velocity and Acceleration worksheet

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