12-18-08+Kyle+Karp

We started the day off with a graded daily question. The question was "A catapult fires a pumpkin at 30mi/hr in the 130 degree diretion. Using trig, calculate how fast the pumpkin was traveling when fired horizontally and vertically" To find this answer a drawing needed to be made to find show the trig functions. A right triangle is set up and the internal angle needs to be found first. The interior angle ended up at 50 degrees. Cos Theda= A/H Sin Theda=O/HCos50=A/H Sin50=0/30 30 Cos50=A 30 Sin50=O 19.3 mi/hr=A 23.0 mi/hr=O

We then went over a few answers from page 24-25, they are as follows1. 7.37 m/s 5.16m/s 2. 15.4 m/s 42.3m/s 3. 113.3N 52.8N 4. 53.6 m/s 45.0 m/s 5. 5.46 m/s 6.52 m/s They are all answers give on the board to problems 1-5 on pages 24 and 25 from yesterday.

We then continued our trig and vector problems with page 26. Page 26 consisted of 3 vector review problems in addition to trig problems. The point of the class today is to get all the "kinks" out before our 30 point test tomorrow. The following are the answers to Page 261. 74.5m @ 323.7 or 216.3 degrees2. 39.4N @ 171.8 degrees3. 38.1 m/s @ 203.2 degrees

We are also reminded if we did not pay the money for our shirt we are turn that in ASAPIt is over a week due Graded DQTest Reminder/ProtractorReview Pages 24-25More Practice A few things on the test tomorrow are:trig functionsdifference between vectors and scalorsvectors adding and subtracting vectors and when to use them

Word Count: 286 words