11/5/08

Back from Break

No school Tuesday and, now, back to the saltmine. And the mine was definitely salty...lots of things to do and lots of progress to make.

Physics - a discussion of the friction lab helped to frame the discussion of the lecture on air resistance. Tomorrow, bring the completed homework questions and any additional needs to prepare for Friday's exam. I'll have your labs back to you tomorrow to use for studying.

Physical Science - tidying up loose ends concerning gravity and its effects on motion. Projectile motion and orbital motion consider motion in two dimensions. You should be aware how those dimensions affect (or fail to affect) each other and describe the motion in qualitative (non-mathematical) terms. Tomorrow's law will allow you to investigate the role of air resistance in determining an object's motion. We'll discuss the lab on Friday and address any final questions about the forces unit. The exam Monday will cover the material through tomorrow's lab and reach back to our study of friction. Also, tomorrow, I'll give you a packet on how to write a lab report based on a student-created experiment (chapter review item #42). You should use that as a guideline for your write-up and we will go over it briefly tomorrow.

Honors Physics - Work can be described as a change in the energy of an object and tonight's homework looks at that aspect of the work concept. Note: although it is not stated in the problem, for 5C #3, assume that the car is sliding down the driveway - it is not being driven down the incline.

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