#Goals: SWBAT...
1. describe the meaning of the five UAM variables
2. solve a 1-D kinematics problem using the UAM equations.
Warm-Up (4min)
define uniform
what is motion?
Do each of the following represent uniformly accelerated motion? y/n?
a. raindrop falling
b. snowball rolling down hill
c. a car slowing, then crashing into a parked car
d. a VW Beetle driving on a straight freeway at 90km/hr
CLASSWORK
1. #025A Uniformly Accelerated Motion Notes Part 1: LINK 1 (5 min)
four equations
five variables
The four UAM equations should be in your notes from the HW. If not, you'll copy them in a few minutes. You'll need to memorize them this week.
How many variables in each equation?
kinematic formulas are only accurate if the acceleration is constant during the time interval considered, we have to be careful to not use them when the acceleration is ________
Does an object in free-fall experience constant acceleration? If yes, what is it?
Does mass matter? Think back to your penny lab...
1 penny vs. 5 pennies drop
2. #025B Solving Practice Problems Together: (10 min)
- LINK - The Physics Classroom
- What does their problem solving strategy resemble from our class?
- Note that scientists still(!) don't have uniformity in the labeling of variables in UAM equations. For example, the Physics Classroom website uses d for displacement, while I use delta x. To help you see the connections between the two sets of variables, copy the two versions of the equations from the board. They're written in RED.
- Solve Example Problem A with me, then Example Problem B on your own
- Feeling like you need more information? Are all the variables confusing? Perhaps choosing an equation is feeling like a challenge for which you aren't ready? Here's a video from the physics classroom: LINK
- 0:00 Understanding the 4 UAM equations and their variables
- 2:47 Problem Solving Strategy
- 9:13 An Action Plan for how you can deepen your understanding through more practice
- Need/want more info on UAM equations? Here's a third perspective from Khan Academy: LINK 2
3. #025C Solving Practice Problems On Your Own (20 min)
- Four (4) problems for you to solve
- use GUESS. Organized paper = organized brain.
- Pause the video below at the beginning of example problems 1, 2, & 3, and solve them. Get stuck? Unpause the video and help yourself. LINK
- 0:00 Understanding the 4 UAM equations and their variables
- 2:47 Problem Solving Strategy
- 3:36 Example Problem #1
- 5:15 Example Problem #2
- 7:25 Example Problem #3
- solve #1 here --> LINK - The Physics Classroom
At Home Learning (HW)
1. #025C practice problems. If you didn't complete this in class...do it for HW
2. #025D: Tomorrow we will practice solving UAM problems. You'll want to memorize the five variables, and know how to choose the correct equation (just like in the HW video). For homework, watch Mr. P solve an introductory UAM problem.
Take Notes: LINK 1
Watch the video, and answer the EdPuzzle Questions: LINK 2
OLD LESSON PLAN BELOW - DISREGARD
#Goals: SWBAT...
1. Sketch P-t and V-t graphs which match given characteristics.
WARM-UP
Copy the three graphs from the board. What does each show? Choose an answer from the following choices
A. Constant
B. Constant positive (+) change
C. Constant negative (-) change
D. increasingly positive (+) change
E. increasingly negative (-) change
CLASSWORK
1. 025A: Walking Out Graphs
Copy the following. Replace the word "distance" with "position"
For each graph, briefly describe what's occurring on each leg of the graph. See examples on board/below
A. Positive increasing position AKA positive constant velocity
F. Positive constant velocity, then negative constant velocity past the zero point, then positive constant velocity back to zero
2. Quiz 5 Grading
Learning at Home (HW)
You need to memorize the 4 UAM (Uniform Accelerated Motion) equations shown in this video. Quiz yourself, and try to memorize them over the weekend.
Answer the EdPuzzle questions (LINK) and take notes. If you need an example of notes, here's one (LINK)
Warm-Up: just write "Exam Day"
POST-EXAM
When you finish the exam, you may quietly work on lab #2, or other quiet work. Here are some guidelines for the lab. Topics in CAPS are especially important.
Purpose
Materials
PROCEDURE
DATA
SAMPLE CALCULATIONS
RESULTS
ANALYSIS
- Any errors? If so, which ones, and how did they affect your results?
- If you didn't have any errors, why not? What steps did you take that made your lab work so well?
Conclusion
- Sum up the lab, the experience, how did it go?
LEARNING AT HOME
#025: You homework, due TUESDAY, is to prepare for class by watching ten minutes worth of videos on Free Body Diagrams (there are two videos). We'll be doing an activity based on these, so make sure you learn the material before class.
Take Notes: Free Body Diagrams
Watch the video, and answer the EdPuzzle Questions: EDpuzzle
Take Notes: The Reality of our First Free Body Diagram
Watch the video, and answer the EdPuzzle Questions: EDpuzzle