10-9-08



// Frances Bruey // // The Daily Manning // Today in Mr. Manning’s first period class, started off slow. We discussed how checks for the Physics t-shirts were due today. However, our class has an advantage. Since the checks are being sent in second period tomorrow (December 10,2008), then if you are like Andrew and Frances in the class you still have one day to hand in your checks! Remember, they come in grey and white. Don’t be the only person to not get one. After this discussion, Mr. Manning checked everyone’s homework which was page 16. There were only three problems so if you had your ruler and protractor it was easy. However, some people still did not bring one in. There was a lot of sharing of measuring tools today. If you still do not have yours remember to bring it in tomorrow with your check. The homework consisted of making vectors on your graph paper. This was followed by completing a graded DQ, or daily question. The Daily Question was: using the scale 3 cm = 50N and the graph paper, draw a vector representation for a force of 175N in the 205 degrees direction. To complete this problem you must first find out how long your vector will be. To do this simply write the fraction 3cm/50N and make it equal to x/175N. Cross multiply. X should equal 10.5 cm. Now subtract 180 degrees from your 205 degrees. The answer is 25 degrees. Finally you can draw you vector. Turn the protractor upside down and make a vector at the 25 degrees that is 10.5 cm long. Fill in your arrow. Mr. Manning does not like the >’s. Simple enough? 10 .5 cm @ 25 degrees (not drawn to scale) We then proceeded to review homework for anyone who did not understand. After this, the class practiced more vector addition by finishing page 15. To anyone absent this day, it is highly recommended that you finish this page to completely understand vector addition.