12-8

December 08, 2008 By Liz Chever

Today in Physics class, we started off with a graded daily question. We had two vectors to draw on our graph paper. The two questions or vectors we had to draw was 7.35 cm at 82.0 degrees, which resulted in the top right section of the paper, and 45.1 mm, or 4.5 cm, at 317.0 degrees, which resulted in the bottom right portion of our paper. Next, we reviewed answers from the previous day from the "Using Vectors Notes and Worksheet" packet, page 11-14. Mr. Manning explained the proportions of vectors and the answers from the day before. We then picked up a new packet at the start of class, "Vector Addition", page 14-16. To find the sum of vectors, there are steps we must take. First, we need to choose a scale. Then we need to calculate the lengths for all the vectors. Thirdly, we then draw all the vectors, each starting at the head of the previous vector. It doesn't matter which vector you start with. Lastly, the Resultant vector is drawn, connecting from where you started to where you end. This new line needs to be measured in degrees, and then solved from the proportion problem. At the end of class, Mr. Manning gave us time to work on practice problem. The rest was to be done for homework, page 15 and 16, due tomorrow, Tuesday.

This picture below is showing an example of what the Resultant vector is. In the picture, the bright pink line represents this, connecting the two vectors and showing the sum.