9/16/11

Vectors

Before we move into 2-dimensional motion, we have to tackle the wonderful world of vectors. The ability to combine and resolve vectors will be critical in this course and we have to make sure that the necessary skills are hammered out now. B, E and F Blocks discussed the properties of vectors today and a method for constructing vector diagrams. We'll use the tail-to-tip method in this class, but if you already know the parallelogram method, go ahead and use it. But, definitely take the time to draw a vector diagram before tackling a problem; you will be surprised how much easier setting up your problem will be and how much better you can visualize the situation with a good diagram staring you in the face. We also took time to demonstrate using the Pythagorean theorem and the tangent function to calculate the magnitude and direction of a resultant vector and will add on the sine and cosine functions when we discuss vector resolution on Monday.

C Block had an overview of vector operations and then worked through a computer simulation that allowed them to work with vectors both graphically and mathematically. You got to combine vectors, resolve vectors and work with situations were there were many vectors involved in a problem. As long as you can get them sorted into vectors along the x-axis and vectors along the y-axis, you can make a nice right triangle to find your resultant. We'll go over that activity on Monday and then put a little more flesh on the vector bone.

Blocks B, E and F may want to practice with the simulation that C Block worked on today, so here it is for your enjoyment (along with the LAB SHEET)

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