DAY 40
12/10/16: New Problems Added***SOLUTIONS ARE TOWARDS THE BOTTOM OF THE PAGE...
WARM-UP
Open Chapter 4, and go to page 104. These are quick questions
1. Complete practice problem #30
2. Define, "trajectory"
3. What will the ball do in the few seconds after you throw it? Based on the FBD you just drew, explain why the ball follows the trajectory it does.
4. Complete #34 & 35 (which physics term is synonymous to "increasing speed"? Not sure? Ask me)
5. For #35, include the forces in your explanation.
CLASSWORK
1. Forces of Ropes & Strings
A. Using a top-down perspective, draw a system in which there are two people of unequal mass (Jackson, 10kg and Jalen, 70kg) pulling on a rope with the same force in opposite directions. Label any FT or acceleration that may be present.
4. Final Exam and CH 4 Exam Review
For CH 1.1-4.3:
- you'll want to review vocab from each section, as I will ask you some definition
questions.
- BRING A 1 PAGE SINGLE SIDE SHEET OF NOTES, and a 1 PAGE SHEET OF EQUATIONS for the test.
- you'll want to review the Study Guide section at near the end of each chapter.
- CH4: pg 112: 46; pg 113: 56, 58, 59, plus 69, 70, 71, 73, 74, 75, 76, 77, 81
- CH3: pg 80: 67, 73; pg: 81: 81; pg 82: 86, 98
- CH2: understand particle diagrams; pg 52: 47; pg 54: 60(skip part A)
- CH1: pg 24: 37; pg 26: 67(A, C, D); review graphing equations from section 1.3
***Answers are here. Worked SOLUTIONS are below***
Worked Solutions
HOMEWORK
Do that study thing... practice these problems :)
Goals: SWBAT...
1. Define the Friction Force.
2. Distinguish between static and kinetic friction
3. Find the friction (interaction) force between objects.
4. Determine the components of vectors
WARM-UP & HW CHECK (10 min) pg 128: 20, 21 (23 for EC); solve for
You horizontally push a 2kg steel box across a steel floor at a constant velocity of 2.0m/s. How much force do you exert on the box?
a: draw your axes
b. draw an FBD
c. Solve for FN
d. Solve for the pushing force (FA)
CLASSWORK: (for each CW activity, think about which goal you are meeting. Also, tell me how the activity helps you achieve that goal)
1. HW Review (10min)
2. Sample Friction Problem: Does the Book Move?
A. fill in the "known" information
B. For the x- and y-component sum of forces equations, label each of the forces (example, FN) and fill in any missing parts.
C. Solve the equation.
D. Which way will the book move?
3. Hands On Activity: Finding Ff Kinetic (30min)
- How can we apply the
that we solved for?
- Use
and the mass of a tub that you didn't use to predict the required
applied force to keep the tub moving at a constant velocity.
- Which goal from above connects to this activity?
4. Final Exam and CH 5 Exam Review
For CH 1.1-5.2:
- you'll want to review vocab from each section, as I will ask you some definition
questions.
- BRING A 1 PAGE SHEET OF NOTES, and a 1 PAGE SHEET OF EQUATIONS for the test.
- you'll want to review the Study Guide section at near the end of each chapter.
- CH5: pg 141: 79, 81(D), 82(C); pg 142: 85, 91
- CH4: pg 112: 46; pg 113: 56, 58, 59,
- CH3: pg 80: 67, 73; pg: 81: 81; pg 82: 86, 98
- CH2: understand particle diagrams; pg 52: 47; pg 54: 60(skip part A)
- CH1: pg 24: 37; pg 26: 67(A, C, D); review graphing equations from section 1.3
***SOLUTIONS***
5. Connect activities with goals
HOMEWORK:
Due Thursday: one page sheet of notes. One page sheet of equations. Both can be used on your final exam/chapter 5 test.
If you haven't already, find
from our lab on Wednesday. Bring it in the day of the final