Today we turned in the HAC check and the blue sheet, which was worth 10 extra credit points if it hadn't been used to extend any assignments. We checked the homework from last night and then Coats-Haan went over a few of the tougher homework problems on the board. We got some time to finish our pair check from yesterday and turn it in, and then we used the rest of the time to work on the reviews due tomorrow. The two reviews are our only homework for tonight.
Also! Coats-Haan is having a review session after school tomorrow, so if you need some help before the exam, it is highly recommended that you attend. No material will be prepared specifically for the review session, but Coats-Haan is prepared to help people individually and answer any and all questions you may have about the material. You can also visit her at the beginning of the day to ask questions; the earlier you come, the more time you will have to get individual help.
QOD: In relative motion problems, we have to add vectors. How do you know when to use ROXY?
Vectors that are going in the same direction or opposite directions can be added together by simple addition and subtraction. Vectors that, together, form a right angle can be added together by using the Pythagorean Theorem to find the resultant, which is the hypotenuse of the right triangle that the vectors form. I would say that with any combination of vectors besides these special scenarios, it would be best to use ROXY.
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