DAY 53

NGSS Standard (this is what we're learning with this unit)

Analyze data to support the claim that Newton’s second law of motion describes the mathematical relationship among the net force on a macroscopic object, its mass, and its acceleration. [Clarification Statement: Examples of data could include tables or graphs of position or velocity as a function of time for objects subject to a net unbalanced force, such as a falling object, an object sliding down a ramp, or a moving object being pulled by a constant force.] [Assessment Boundary: Assessment is limited to one-dimensional motion and to macroscopic objects moving at non-relativistic speeds.]

#Goals: SWBAT...

1. Choose a scenario for their art project

2. Draw correct FBD's, with appropriate vector magnitude and direction.

3. Use FBD's to find Net Force x & y, Ff, Fn, etc.

WARM-UP

1. Construct a free-body diagram for the following object; label the forces according to type. Use g = 9.8 m/s2 to determine the magnitude of all forces and the net force and acceleration of the object.

- A 2-kg box is falling from a tree. Ignore air resistance.

2. How many (100g) candy bars worth of Fg will the 2kg box experience?

CLASSWORK

flex time today - you can split your time, or choose to focus on one assignment

1. 052B: Make Room 37 Pretty Again #MRPA (25min)

Today SCIENCE and ART will band together, to Make Room 37 Pretty Again #MRPA
Your task: take one of the Wizard level problems you already solved (LINK), and make the solution look professional, interesting, and cool. For Mastery level scores, modify the scenario and include a real object, with real masses, real mu value, etc.
- For example, you could diagram a 2019 Ford Mustang slowing down on pavement. To be accurate, you would look up the mass of a 2019 Mustang, the coefficient of friction between tires and pavement, choose a reasonable acceleration value (most street tires can only handle up to about 9m/s2), and calculate the actual numbers for Fg Fn Ff.
- Cool link for tire coeff of friction (thanks Maya!): http://hpwizard.com/tire-friction-coefficient.html
  - Another cool link: https://www.engineeringtoolbox.com/friction-coefficients-d_778.html
Your tools: The already solved problem, your notebook, a piece of White Drawing Paper, some markers, and...... the rubric: http://rubistar.4teachers.org/index.php?screen=ShowRubric&rubric_id=2772035
The Steps:
- Map out a rough draft showing where you'll put all the components of your drawing (2-4min). You should do this in your notebook, under where you wrote the scenario for today's warm-up
- I suggest you paraphrase the scenario - it's rather long.
- Want to be creative? Add a character, or a poem, or a cooler object than just a plain square box...? Want to draw your FBD the easy (slightly incorrect) way, or the harder (but correct) way?
- Draw it!
- #MRPA

2. 052C: Force / Newton's Laws Exam Review (20min)

Exam Tuesday
Begin reviewing by answering questions in the link below:
- PROBLEMS: 1-6 (all), 7(a-i), 8a, 9, 10, (skip 11), 37(a-e)
- LINK: https://www.physicsclassroom.com/reviews/Newtons-Laws/Newtons-Laws-Review-Questions-with-Links

LEARNING AT HOME (HW)

1. Complete #052B #MPRA. Due by Friday

2. Forces/Newton's Laws Exam:

next week, Tuesday
Begin reviewing by answering questions in the link below:
- PROBLEMS: 1-6 (all), 7(a-i), 8a, 9, 10, (skip 11), 37(a-e)
- LINK: https://www.physicsclassroom.com/reviews/Newtons-Laws/Newtons-Laws-Review-Questions-with-Links
Thursday, we will have our Annual Newton's Laws Olympics
Friday, a bit more practice for the exam & semester reflections
Tuesday, exam

Halloween 2018

NGSS Standard (this is what we're learning with this unit)

#Goals: SWBAT...

1. Draw correct FBD's, with appropriate vector magnitude and direction.

2. Use FBD's to find Net Force

3. Describe the relationship between mass, net force, and acceleration

WARM-UP

Construct a free-body diagram for the following object; label the forces according to type. Use the approximation that g = 9.8 m/s2 to determine the magnitude of all forces and the net force and acceleration of the object.

- A 2-kg box is sliding to the right across a table. The force of friction upon the box is 5 N.

CLASSWORK

1. Review Classwork from Day 52

2. #053A: Quiz Practice & Wrapping Up Newton's 2nd Law

The Solve It! (with Newton's Second Law) Concept Builder provides learners plenty of practice using the Fnet = m•a equation to analyze situations involving unbalanced forces and accelerations.
Much more than the usual Concept Builder, this activity demands that learners solve numerical problems. A word story problem with numerical information and a free-body diagram are provided.
Learners will have to determine the values of as many as eight quantities.
There are a total of eight problem types spread across three difficulty levels.
The difficulty levels are different in terms of the complexity of the problem.
Learners can have as many tries at the problem as needed, but each miss results in a deduction from the health rating..
Question-specific help is provided for each of the eight problems.
Activity Link: https://www.physicsclassroom.com/Concept-Builders/Newtons-Laws/Newtons-Second-Law-Problems/Concept-Builder

Learning at Home (HW)

- Quiz 7 tomorrow (Thursday)

- Complete the Apprentice and Master sections of 053A (if you didn't finish in class).

- The quiz will be one problem, in the exact same format as the classwork from today

Hello Spring Break, I've missed you. It's been too long....

Goals: SWBAT...

1. Answer the following question: Momentum - Is it conserved in an explosion?

Warm-Up (5min): Consider a system with two carts. Cart 1 is moving to the right with a momentum of 125kgm/s & cart 2 is stationary. Both carts have a mass of 125kg each. The collide, stick together, and roll to the right.

1. What is the final momentum after the collision?

2. Find the final velocity (post collision) of the carts

CLASSWORK

1. #052C: Is momentum conserved during an explosion?

4 minutes to complete any leftover bits

2. #053A: Quiz Grading

3. Extra Credit

At Home Learning (HW)

1. Extra Credit Options (you can do a max of two):

Build your own models of the six simple machines, including all three types of levers (so 8 machines total). Any medium may be used (including a 3D printer). Be prepared to bring in your models, and explain your models to the class. Up to 20 points
Build a Rube Goldberg Machine in your home that uses all 6 simple machines (including at least 2 different types of levers) to pour cereal into a bowl. Video your project (with your face viewable in the video) and load on the following website to share with others: https://diy.org/skills/physicist/challenges/389/make-a-rube-goldberg-machine Be prepared to present your video to the class. Up to 25 points
Here's another video showing some suggestions for how to go from concept to successful build of a machine. It's a blog post meant for teachers, but it could be useful for you as well... :) http://steampoweredclassroom.com/sum-up-how-to-do-a-rube-goldberg-project-and-not-lose-your-mind/
Some info on Rube Goldberg (man, myth, legend), Simple Machines, and the six types of simple machines, is here: https://media.rubegoldberg.com/site/wp-content/uploads/2017/10/HumdrumDay-LessonPlans-2.pdf
Write a children's book that explains the six simple machines. This book must be typed and include illustrations. The illustrations can can be clip art, images from on-line, or your own artistic creations. Be prepared to read your book to the class. Up to 20 points

2. You can make up any missing CW/HW from the past week, study for any quizzes you did poorly on (so you can retake them), and make up missing warm-ups.

Have a great spring break :-).