Rotating Energy Race

DoNow: Compare and contrast how the energy is distributed in a rotating system vs. a non-rotating system.

AIM: I can use the equations for rotational Inertia, energy and rotational kinematics to describe the effect of distribution of mass on the energy transformation in a rotating system.

Activities:
- Tableshare & Submit Amusing Rotations HW
- Tableshare & Review Come Back Here HW
- Tableshare & Color Review Balancing Act CER
- The BIG Race Whiteboard (notes)
- The BIG Race CER

Textbook Review Ch10.1- 10.6

Homework:
Balancing Act CER, Come Back Here HW

Coming Up:
Rotational TEST: Mon, 02Feb15
BONUS - B Nye: Spinning Things (1) (2) (3) (25-words x4) Due: Mon., 02Feb15
Semester Photo Project, Photo 1 Due: 09Feb15

Rotation FUN

DoNow: Two equivalent rods, mass M, length L are raised similarly, so the ends of both are located on a horizontal surface and the other suspend so there is a 45 degree angle formed with the rod and the horizontal. One rod has a pivot on the table and the other is able to move freely without friction. What's going to happen when the support is removed? Which rod hits the horizontal first? (notes)

AIM: I can identify vocabulary, variables and equations that are specific to rotational kinematics and energy and how rotational, translational and potential energy transform in a non-slipping rotational system.

Activities:
- Tableshare & Submit How We Roll HW
- Tableshare & Review Amusing Rotations HW
- The Balancing Act CER
- Semester Photo Project
- The BIG Race Whiteboard
- Come Back Here HW

Textbook Review Ch10.1- 10.6

Homework:
Balancing Act CER, Come Back Here HW, Amusing Rotations HW

Coming Up:
Rotational Kinematics & Inertia Review
Semester Photo Project, Photo 1 Due: 09Feb15
Rotational TEST: Mon, 02Feb15

KE Conservation & Rotation

DoNow: A 1.0 m diameter disk has 6.0 J of rotational energy when rotating at 3 m/s. Calculate the rotational inertia or moment of inertia for the disk. Calculate the mass of the disk. (notes)

AIM: I can describe kinetic energy of rotational systems and the conservation of energy in rotational systems.

Activities:
- Tableshare & Submit Around and Around HW
- Tableshare & Review How We Roll HW
- Rankings
- Amusing Rotations HW

Textbook Review Ch10.1- 10.6

Homework:
Amusing Rotations HW,  How We Roll HW

Coming Up:
Rotational Kinematics & Inertia Review
Rotational TEST: Mon, 02Feb15

Mass Distribution and Energy

DoNow: A 1 kg ball is rotated on a 2 m string in a horizontal circular path with a tangential speed of 5 m/s for 10 seconds.

a. Determine the angular or rotational speed of the object in rad/s.
b. Calculate the distance the object travels during the 10 seconds.
c. Calculate the centripetal acceleration of the ball.
d. List possible changes that would create a non-zero angular acceleration of the ball.
(notes)

AIM: I can describe kinetic energy in rotational terms and the variables that affect rotational inertia. I can identify the rotational inertia equations for at least two different distributions of mass systems.

Activities:
- Tableshare & Submit Reduce Reuse Re-Circle HW & Starting to Spin HW
- Tableshare & Review Around and Around HW
- Rotational KE and Inertia Demo (notes)
- How We Roll HW

Textbook Review Ch10.6

Homework:
How We Roll HW, Around and Around HW

Coming Up:
Conservation of Rotational KE
Rotational TEST, Mon., 02Feb15

Rotation Tangents

DoNow: What does the bar graph for KE, PE and non-conserved Energy look like for the ballistic pendulum? (notes)

AIM: I can identify the time period and convert between angular rotation variables and linear motion variables.

Activities:
- Submit Sub Classwork & Ballistic Pendulum Deliverable
- Tableshare & Submit Remember This? HW
- Tableshare & Review Reduce Reuse Re-Circle HW, Starting to Spin HW
- String & Marker Activity
- Linear to Rotation (notes)
- Rotational Motion Whiteboard
- Around and Around HW

Textbook Review Ch10.4 - 10.5

Homework:
Around and Around HW, Reduce Reuse Re-Circle HW, Starting to Spin HW

Coming Up:
Spining & Inertia
Reduce Reuse Re-Circle HW, Starting to Spin HW, Due: Mon. 26Jan15
Rotational TEST: Mon, 02Feb15

Sub Day

DoNow: Sit at the assigned table that the substitute is expecting to find you.

AIM: I can define rotational motion terms, equations and describe three similarities and three differences between rotational kinematics and linear kinematics.

Activities:
- Substitute Classwork (submit Friday)
1 - Reading Notes: Ch 10.1 - 10.2
2 - Ch10 Conceptual Questions 1, 3, 4, 6
3 - Ch10 Conceptual Exercises 1, 3
4 - Ch10 Problems 1, 2, 3, 5
- Complete Ballistic Pendulum Deliverable
- Reduce, Reuse, Re-Circle HW

Textbook Review Ch10.3

Homework:
Complete Substitute Classwork, Reduce Reuse Re-Circle HW, Starting to Spin HW, Ballistic Pendulum Experience, Remember This? HW (due friday)

Coming Up:
Connecting Circles & Lines
Ballistic Pendulum Experience Deliverable, Due: Friday, 23Jan15
Rotational TEST, Dun-dun-DUUUN!

Rotational Kinematics

DoNow: Assemble the spinner and record ways you can describe the motion. How are your descriptions like the variables we used to describe linear motion; displacement, speed, velocity, acceleration and time.

AIM: I can describe the motion of rotating things with rotational analogs for displacement, speed, velocity, acceleration and time. I can convert between units of rotation.

Activities:
- Tableshare & Submit Momentous Momentum HW
- Tableshare & Whiteboard Review Ballistic Pendulum Experience, Remember This? HW
- Rotational Kinematics (notes)
- Rotational Motion Whiteboard
- Starting to Spin HW

Textbook Review Ch10.2

Homework:
Starting to Spin HW, Ballistic Pendulum Experience, Remember This? HW, Momentous Momentum HW

Coming Up:
Connecting Circles & Lines
Ballistic Pendulum Experience Deliverable, Due: Friday, 23Jan15
Rotational TEST, Dun-dun-DUUUN!

Ballistic Pendulum

DoNow: A 10 kg object is launched through a 1.2 m long tube. The object reaches a maximum speed of 5 m/s while in the tube.
(a) Calculate the change in momentum of the object and the tube.
(b) Describe the Impulse on the object or tube.
(c) Calculate the acceleration of the object moving through the tube.
(d) Calculate the force acting on the object or the tube.
(e) Calculate the impulse time for the object in the tube.
(notes)

AIM: I can describe how to use momentum and energy concepts to predict the motion of objects involved in an inelastic collision with a hanging target. I can describe the units of angle measurements and how they are related; and to convert from degrees to radians and back.

Activities:
- Submit: Ch10 Preview Notes, Using Up Momentum HW & (Sporting Momentum HW)
- Tableshare & Review Momentous Momentum HW
- Angles in Degree and Radian (notes)
- Ballistic Pendulum Experience (video)
- Remember This? HW

Textbook Review Ch 10.1

Homework:
Ballistic Pendulum Experience, Remember This? HW, Momentous Momentum HW

Coming Up:
Rotational Kinematics
Ballistic Pendulum Experience Deliverable, Due: Friday, 23Jan15
Rotational TEST, Dun-dun-DUUUN!

The BIG Momentum TEST

DoNow: What relationships are used for momentum type problems?

AIM: I will show that I know linear momentum and impulse.

Activities:
- Tableshare & Submit: What do you think about momentum? WS & Sporting Momentum HW
- Tableshare: Using Up Momentum HW

- Test Taking Formation

Top Performers and Class Averages

Period	Class Average	Top Performer
1st	70.3%	April
3rd	71.2%	Erika
4th	66.0%	Allen & Evan
6th	58.1%	Grace

*perfect score*

- Momentous Momentum HW
- Chapter Preview Notes: Ch 10: Rotational Kinematics & Energy

Homework:
Momentous Momentum HW, Using Up Momentum HW & Sporting Momentum HW

Coming Up:
Ballistic Pendulum

Recoiling and Reviewing

DoNow: A 10 kg object is launched through a 100 kg tube. The object leaves the 2.5 m long tube with a muzzle speed of 500 m/s.
(a) Calculate the recoil velocity of the object.
(b) Calculate the change in KE or work done on the object.
(c) Calculate the average force acting on the object.
(d) Calculate the time the object in in the tube.
(notes) (video)

AIM: I can describe when and how to apply the Conservation of Momentum Law or Impulse-Momentum theorem to predict motion of objects in a collision or explosion type scenario.

Activities:
- Submit Momentum video illustra-mmary & Keeping Momentum HW
- Tableshare Sporting Momentum HW
- Rankings 74 & 77
- Whiteboard Review: Conservation of Momentum
- Using Up Momentum HW

Textbook Review: Ch 9.6

Homework:
Using Up Momentum HW, Sporting Momentum HW, ...think about Momentum?

Coming Up:
Testing Momentum
B Nye: Momentum (1) (2) (3) (25-word x4) Bonus Due: 14-15 Jan15

Momentum TEST, Block Day, 14-15 Jan15

Riding the Momentum

DoNow: A 10. kg object moving 4.5 m/s collides with a 5.0 kg object at rest. After the collision, the objects stick together.
(a) Identify the type of collision.
(b) Determine the final speed of the objects.
(c) Calculate the kinetic energy transferred out of the system during the collision.
(notes)

AIM: I can describe the relationships of change in momentum and impulse using, variables, units and how a change in one variable proportionally affects other variables.

Activities:
- Submit Building Momentum HW & Momentum video illustra-mmary
- Tableshare & Review Keeping Momentum HW
- Rankings 82 & 64
- Rankings 75 & 58
- Whiteboard Review: Momentum and Impulse
- Sporting Momentum HW

Textbook Review: Ch 9.6

Homework:
Sporting Momentum HW, Keeping Momentum HW, ...think about Momentum?

Coming Up:
Reviewing Momentum
B Nye: Momentum (1) (2) (3) (25-word x4) Bonus Due: 14-15 Jan15

Momentum TEST, Block Day, 14-15 Jan15

Sustaining Momentum

DoNow: A 2 kg object experiences a perfectly elastic collision and bounces off of a wall with a speed of 1.25 m/s.
(a) What happens to the velocity before and after the collision.
(b) Calculate the momentum of the object before and after the collision.
(c) Calculate the change in momentum of the object.
(d) Describe the Impulse of the object.
(e) If the collision takes 0.01 s determine the impact force.
(notes)

AIM: I can describe when and how to apply the impulse-momentum theorem to predict the motion of objects in a collision or explosion type scenarios.

Activities:
- Egg Toss demo
- Submit Comic Review, Momentum WS2 & Starting Momentum HW
- Tableshare & Review Building Momentum HW
- Marker Launch demo
- Momentum in Space video (5 bullet points & drawing summary)
- AP Physics B Free Response 2002 Q1 & A1
- Keeping Momentum HW

Textbook Review: Ch 9.5

Homework:
Keeping Momentum HW, Momentum video illustra-mmary, Building Momentum HW, ...think about Momentum?

Coming Up:

Riding Momentum
Momentum TEST, Block Day, 14-15 Jan15

Keeping Momentum

DoNow: A 100 kg mass moves with a velocity of 2 m/s in a collision course toward a 200 kg mass moving with a velocity of 3 m/s toward the 100 kg mass.
(a) Illustrate the situation.
(b) Calculate the initial momentum of each mass before the collision.
(c) Calculate the total momentum of the system of masses before or after the collision.
(d) In this situation, the collision is inelastic, what speed and direction does each object move?
(notes) (video)

AIM: I can describe when and how to apply the Conservation of Momentum Law to predict the motion of objects in a collision or explosion type scenarios.

Activities:
- Submit Momentum WS1 & h-AP-py New Year HW
- Tableshare & Review Momentum WS2 & Starting Momentum HW
- Comic Review: Momentum and Impulse
- AP Physics B Free Response 2014 Q1 & A1
- AP Physics B Free Response 2002 Q1 & A1
- Building Momentum HW

Textbook Review: Ch 9.5

Homework:
Building Momentum HW, Momentum WS2, Starting Momentum HW, ...think about Momentum?

Coming Up:

Sustaining Momentum
Momentum TEST, Block Day, 14-15 Jan15

Starting Your Momentum

DoNow: A 10 kg mass moving at 5 m/s is involved in a collision that causes it to stop in 0.01 s.
(a) Calculate the average impact force experienced by the block during the collision.
(b) What happens to the force when the impact time is doubled?
(c) The other object in the collision was initially at rest has a mass of 1.0 kg, what is its new velocity? (notes)

AIM: I can identify the velocity of objects undergoing elastic or inelastic colisions and describe how to apply the concept of Momentum Conservation to collisions to quantitatively determine Impact Force, Impact time and change in mass and/or velocity relationships in a collision.

Activities:
- Tableshare & Review Momentum WS1 & h-AP-py New Year HW
- Conservation of Momentum Demos (notes)
- Conservation of Momentum Reading & Momentum WS2
- Starting Momentum HW

Textbook Review: Ch 9.4

Homework:
Momentum WS2, Starting Momentum HW, Momentum WS1, h-AP-py New Year HW, ...think about Momentum?

Coming Up:

Keeping Momentum
Momentum TEST, Block Day, 14-15 Jan15

Intro to Momentum

DoNow: How are Newton's Laws different from kinematics equations?

AIM: I can identify new vocabulary, variables and units that describe objects in motion.

Activities:
- Submit Chapter Preview Notes: Ch 9
- Momentum & Impulse videos
- Force to Momentum Equations (notes)
- Momentum Demos: Observations & Conversations
- Momentum and Impulse Reading & Momentum WS1
- h-AP-py New Year HW
- What do you think about Momentum?

Textbook Review: Ch 9.1 - 9.3

Homework:
Momentum WS1, h-AP-py New Year HW, ...think about Momentum?

Coming Up:

Starting Momentum
Momentum TEST, Block Day, 14-15 Jan15