10/19/10

Gathering Momentum

Physics B started a two-day investigation on the Impulse-Momentum theorem, which states that an object's observed momentum change is the product of the net applied force and the duration of the force's application. We'll finish up the lab in class tomorrow and, as you begin thinking about your write up, reflect on what we discussed about impulse and momentum yesterday in class. You'll get your exams back tomorrow morning and test corrections will be due on Monday.

Physics F discussed their lab investigation and launched into a general discussion of momentum and impulse. Use today's discussion to help frame the conclusions section of your lab write up, which is due tomorrow. Tomorrow, we'll start looking at conservation of momentum, which comes about because of Newton's 3rd Law of Motion. Test corrections are due on Monday, so make sure to get help from me, if needed, before then.

Honors Physics went over their review problems and had a general review for tomorrow's exam. Remember to have those problems with you to turn in before the test tomorrow. Starting Thursday, its off to Work!

Physical Science reviewed Newton's Law of Universal Gravitation and received a set of problems to work using this law. The start was rocky, so we'll take more time in class to work on them. The answers to that sheet are below, if you decide to try to make more headway tonight.

  1. 5.0 x 1015 kg
  2. 2.26 x 104 kg
  3. 80.6 kg
  4. 52 m
  5. 26,000 m or 26 km
  6. 1.0 x 10-2 N

Homework

Honors Physics: Prepare for exam
Physics B: None
Physics F: Complete lab write up
Physical Science: None

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