HW due Wednesday: Complete both sides of worksheet Sig Figs Practice. Also, use the inside front cover of your text to calculate: density of moon, density of earth, density of sun; report as kg/m3. Finally, do these 6 calculations and manage sig figs. 1. 5443002 2. π + 3 3. π / 3 4. π / 3.00000
HW for Monday: chapter 1: Q-3, 4; P-3, 4, 5, 23, 43; measure your bedroom, report volume in SI units, sig figs
Quiz Tuesday: scientific notation, sig figs, and a simple calculation. and in class we will measure the thickness of paper
HW due Wed: chapter 1: COQ (chapter opening questions) 1-2 (see page 1). MCQ (MisConceptual Questions) 1,3,5,6
HW due Friday: 2: COQ; Q 1-9; P 1,2,3,4,5,9,17
NOTE: we are now done with chapter 1 in class, although you need to keep up practice with sig figs. The slides from class are posted above under Powerpoint ..... You can use them to study and review, or to relive those great times we all had in room 309.
HW due next Monday: chapter 2: Q 10, 11, 15; P 23, 25, 27, 61, 62. Also for this physlet, http://phet.colorado.edu/en/simulation/moving-man I want you to try many cases of acceleration. Set up a condition where the man moves with negative velocity but positive acceleration, and print that condition of the physlet.
Points: Velocity: average and instantaneous
Show that x, v, t in kinematics work for any, including final xf, vf, and tf
Acceleration, average and instantaneous
Understand kinematic equations for Motion at constant acceleration
Be able to plot x, v, and a vs. t for simple 1-D motion
Demonstrate the solution technique for kinematic problems
Warning: this is a critical period for this course. The new concepts such as graphing and defining a problem that we are starting will be used all year. Do NOT fall behind in chapter 2 or 3. If you are not following the material in class or the problems, please come see me!
I have open hours posted, I'm here after school, and we have Physics Study Group on Tuesday 5th. Stop by and see me.
HW due Monday: chapter 2: Q 10, 11, 15; P 23, 25, 61, 62. Also for this physlet, http://phet.colorado.edu/en/simulation/moving-man I want you to try many cases of acceleration. Set up a condition where the man moves with negative velocity but positive acceleration, and print that condition of the physlet.
Tuesday: 2: Q 12, 13; MCQ 4, 6, 9;
HW due Wednesday: 2: P: 6, 11, 26, 27, 31, 39
HW due Friday: retreat
HW due next Monday: 2: P- 7, 41, 45, 55, 69, 71,be able to draw the first 2 motion graphs (use Moving Man on PHET for help)
next week: bowling ball lab--kinematics
Demonstrate memorization of kinematic equations
Demonstrate use of kinematics in freefall problems
Show memorization of sketch/list/choose method
Show memorization of symbolic first, then numbers
Demonstrate ability to draw 6 basic graphs of x,v,a vs. t as handout
Add “avoided variable” list to kinematics table in the text
remember how we talked about how narrow the human experience is....check this out for a sense of perspective.
NOTE THAT CLASS SLIDES ARE NOW POSTED ABOVE IN A FOLDER.
HW due Monday: 2: P- 7, 45, 55, 69, 71,
HW due Tuesday: Do this practice problem. It would be worth 20 points on the exam. Find the final velocity of a rock that falls 25m for each case below; for each part, solve first in symbolic form, then plug in the numbers.
a. if the initial velocity is zero.
b. if the initial velocity is +5.0 m/s. It is thrown up into the air.
c. if the initial velocity is -5.0 m/s. It is thrown down.
d. comment on the answer for b and c. they should be the same. why.?
Be able to draw all 6 motion graphs. (use Moving Man on PHET for help)
HW due Wednesday: complete the practice exam which I will hand out on Tuesday, and also is in files at top if you want to start early.
HW due Friday: Exam 1 in class. Bring your calculator.
HW due next Monday: we start chapter 3. read 3:1-5, do 3: COQ; Q:1-4 P:1,3
to get perspective, and to remember that the physics we are learning applies to all this.........
HW due Monday: In class we will perform the lab "projectile motion of a ball". Your assignment is to read and know the lab before class. 3: Q-10, 17, 18; P-5, 7, 9,11; show, using this physlet, what angle gives the maximum range for a given velocity of cannon. http://phet.colorado.edu/en/simulation/projectile-motion
HW due Tuesday: none
HW due Wednesday: 3: Q-11, 20, P-17, 19, 21.
HW due Friday: P- 20, 23, 39, 55, 59. (2 hints for #23: (sinX)(cosX) = 1/2 sin(2X), and sin(2X) = sin(180-2X))
HW due next Monday: 3: MCQ 7-12; p- 18, 23 (do this problem experimentally at home; bring a picture to prove you did), write the list of classic problems for chapter 3 in your notebook.
Points: this is the week you master projectile motion
demonstrate how to do projectile motion on the level
demonstrate how to do projectile motion off the cliff
demonstrate how to do projectile motion up off the cliff
demonstrate how to do projectile motion down off the cliff
Lab update: the video files are located in the J drive and in FILES. I moved the due date to 27 October. A scaffold of your report can be found in FILES. You are free to use this.
HW due Monday: 3: MCQ 7-12; p- 18, 23 (do this problem experimentally at home; bring a picture to prove you did), write the list of classic problems for chapter 3 in your notebook I'll review HW from friday P- 20, 23, 39, 55, 59. (hints for #23: (sinX)(cosX) = 1/2 sin(2X), and sin(2X) = sin(180-2X))
Due Tuesday: before class, have in your possession all the distance data for each run (steel or glass) of lab 2 in a table with your name on it. Bring that and show me. there will be a quiz on one of the first two classic problems in chapter 3 (cannon on the level or car off a cliff)
Also Due Tuesday: in this video, a car is pushed into the river from 18 stories. I timed the fall at 3.2s. I estimate that the car fell 120 feet horizontally away from the building (the range). Using your physics, calculate the height of the fall and the horizontal velocity as it left the building. Report in SI units and in mph (miles per hour).
For next Monday, show me that you have done the loggerpro analysis for the launch velocity of your steel ball off the ramp. The videos are posted in the J:drive under our class (and also in FILES above, but you'll have to download them from the website before you can import them to Loggerpro). If you plan to do the analysis at home, you will need to transport the data to your home via email or a USB-drive or from the website. You should plan on 30 minutes for this work the first time. Look at Using Loggerpro On Videos under Physics Tools for step by step instructions. Also use Help in Loggerpro. You are in the digital generation, so i'm confident that you can figure it out.
due Next Tuesday: Read sections 4-1 through 4-4; 4:COQ 1; Q-1,2,3,4,5 and: Q- 5, 8; P-1 and is a nice ESPN analysis of high jump. The jumping jumper jumps 93 inches, but his center of mass we'll assume goes up to 87 inches. Assume he lands on the same level (even though he really lands on the tall pad). How long is he in the air? I estimate that his forward travel, the Range, is 72 inches. So what is his vx at takeoff? what is the angle θ of his launch?
points this week. Be able to write the steps for solving projectile problems. Know the requirements for completing a lab report Know Newton's first and second laws of motion Know that force is a push or a pull