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AP Mon 11/28 Papers back Go over chapter 8 day 2 AP Tues 11/29 Chapter 8 day 2 redos due. Do “Extra Problems” from other books AP Wed 11/30 “Extra Problems” from other books DUE STUDY! (don’t forget calculus!) AP Thurs & Fri 12/1-2 Two-day TEST HW: 4-part Experiment write-up!

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AP Monday 12/5 1.Discuss Experiment write-ups Lecture notes on error analysis 2.Test corrections In red on test, 20 min or so 3.Rest of semester discussion (finals…) 4.Lecture Notes and Impulse-Momentum theorem See next 2 slides 5.Asst: D (easy J = F · t = p problems)

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Note – this unit looks VERY similar to the last unit: In that unit you had 2 basics equations: (1) J = F t = p, or if the impulse was zero (as it is in a closed & isolated system), then: (2) p initial total = p final total See in later slides that, just like the impulse-momentum theorem above, we now have the work-energy theorem: (3) W = F d = E And see in later slides that, just like we had the conservation of momentum in a closed & isolated system above, we now have the conservation of energy when the net work done is zero: (4) E initial total = E final total So, you will have both of those types of math-problems to solve on the test, as well as many conceptual problems again. (But note things are slightly more complicated this time, as the F d, written & pronounced “F dot d” is a special type of multiplication, and there is more than one type of energy!)

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J = F · t = p = p F – p I = mv F – mv I = m(v F – v I ) = m v a b c d e f g

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AP Tues 12/6 1.Quick lecture notes on “conservation of momentum” See next 4 slides 2.Do the experiment (since the equipment is already out!) 3.Asst E (easy p = 0 problems)

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Conservation of Momentum problems: 1.Write for EACH problem: (m 1 v 1I + m 2 v 2 I + …. = m 1 v 1F + m 2 v 2 F + …) 2.Plug in knowns/unknowns BEFORE collision for each object: 3.Plug in knowns/unknowns AFTER collision for each object 4.Solve for what you don’t know

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Note the units must “MATCH”, like in the gas laws in Chemistry. So, the masses can be in grams, if they ALL are.

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(m 1 v 1I + m 2 v 2 I + …. = m 1 v 1F + m 2 v 2 F + …) Some examples from non-AP:

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Some more examples from non-AP:

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1.Questions on HW (either D or E) turn in D Go over ch9#35 and ch 10#37 2.More W-E-P test corrections 3.Start doing / explanation of 2-D problems w/ vectors 4.Asst: G #1-4 (yeah, we’re skipping around a bit) AP Wed 12/7

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1.Any more Questions on HW E; turn in 2.Go over 2-D w/vectors; “finish” #1 (see below) 3.Small discussion about tomorrow’s asst (F) notes 4.More W-E-P test corrections 5.Asst: finish G 1.#5-6 2.Do % error for 1-6 (difference / average x 100%) 3.Do “energy lost as a % of the initial energy” for 1-6 4.Lecture notes 2-D problems w/ equations / ASST H – pushed to next week!! 5.Binders due tomorrow! AP Thurs 12/8

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(Mrs. Lewis at Negotiations) Work period – asst F (14 problems that use everything you know so far!) Work together & help each other – ALL OF YOU! BINDERS DUE! (Put them in the boxes in the back!) (Experiment Portfolios up to W-E due next Friday!) AP Friday 12/9

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AP Monday 12/12 1.Collect 2D problems (xc only counts if turned in today at beginning of class) 2.Go over Pendulum page on last test 3.Go over (hard) asst F (90% of next test) –p189#12 –Ballistic pendulum, ch 10#39 4.Look at example for 2D with equations 5.Asst: H parts a & b

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Tuesday –1 page last test –Concepts & finish H Wednesday –1 page last test –Concepts & start I Thursday –last page of last test –Concepts & finish I Friday –Center of mass (asst B)

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