newton’s first law of motion 12/8/14 12/8 weight vs mass textbook p 392-393 hw: physics to go tb:...
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Newton’s First Law of Motion12/8/14
12/8 Weight vs Mass Textbook p 392-393HW: Physics to go TB: p.402 #1 and #2
12/8 Newton’s 1st Law of Motion Workbook p 65-68
12/9 Science Fair12/10 Newton’s 1st Law of Motion Workbook p. 69-72
HW: Read WB p. 73-75 in the workbook. Annotate for procedural words and underline where information should
be recorded. Note any directions that are unclear.
12/11 Newton’s 1st Law of Motion WB p. 73-7612/12 Newton’s 1st Law of Motion WB p. 73-76 /Quiz
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Date: 12/8/14 Objective: I can distinguish between mass and weight. I can also calculate weight in Newtons (N)
Bell Ringer: Based on the data below, one could generalize thatminerals used in abrasives? A. Contain carbon B. Have hardness of 7 or above C. Are always red in color D. Have a density of 4.0 g/cm3. (EMI.20-23.1: Select a simple hypothesis, prediction, or conclusion that is supported by a data presentation or a model )
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Date: 12/8/14 Objective: I can distinguish between mass and weight. I can also calculate weight in Newtons (N)
Activity Titled : Textbook p. 392Answer Investigate Part A questions 1-5 in your
NotebookAnswer questions with your shoulder partner. Both
partners must write their answers in your notebook
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DEFINITIONS
Mass- the amount of matter an object has.
Matter- something that has mass and takes up space.
Weight- is the amount of mass of an object, it is dependent upon gravity.
1 pound (lbs)= .45 kilogram (kg)
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Look at this figure. The mass of the bowling ball does not change, but the mass of the puppy does. How? Where does the matter come from?
Can the mass of the bowling ball ever change?
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Place these 5 items in the order they would be the most attracted to the Earth due to gravity. Explain why you picked your order.
House fly
Tennis ball
Elephant
Bowling ballpeanut
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Exit QuestionWhat would happen to your mass and to your weight if you went to the moon?
Explain how you arrived at your answer.
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Date: 11/8/13 Objective: I can investigate Newton’s first law of motion
Bell Ringer:1.What would happen to your mass and to
your weight if you went to the moon? Explain how you arrived at your answer.
2.Calculate the weight of a 50kg ball?Fw=mg
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Place these 5 items in the order they would be the most attracted to the Earth due to gravity. Explain why you picked your order.
House fly
Tennis ball
Elephant
Bowling ballpeanut
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12/8/14 Activity
Workbook page 65
Read demonstration as a group
Complete workbook p.67 independently
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Date: 12/10/14 Objective: I can understand Newton’s first law of motion and apply the concept to my daily life
Bell Ringer:Based on our activityYesterday, if the rollerCoaster starts at point BWhat point will the cart Reach? D or E or FExplain why
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12/10/14 Activity
Complete workbook p.68
Class discussion
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12/10/14 Objective: I can understand Newton’s first law of motion and apply the concept to my daily life
Independently read and annotate Workbook p 69-71
7 minutes
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12/10/14 Objective: I can understand Newton’s first law of motion and apply the concept to my daily life
Video
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12/11/14 Objective: I can understand Newton’s first law of motion and apply the concept to my daily life
Workbook page 72 complete TEJfor Newton’s 1st
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12/11/14 Objective: I can understand Newton’s first law of motion and apply the concept to my daily life
HW: Read WB p. 73-75 in the workbook. Annotate for procedural words and underline where information should be recorded. Note any directions that are unclear.
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12/12/14 Objective: I can understand Newton’s first law of motion and apply the concept to my daily life
HW: Read WB p. 73-75 in the workbook. Annotate for procedural words and underline where information should be recorded. Note any directions that are unclear.
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Date: 12/11/14 Objective: I can read and understand procedures to perform an activity on Newton’s second law of motionWB p 73-75Perform activityPerson #1 supplies-set up, take down, and care of cart and massPerson #2 operates the glxPerson #3 records dataPerson #4 reads directions
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Date: 12/11/14 Objective: I can read and understand procedures to perform an activity on Newton’s second law of motionWB p 73-75
Perform activityPerson #1 supplies-set up, take down, and care of cart and massPerson #2 operates the glxPerson #3 records dataPerson #4 reads directions
Follow the directions on p. 74 part 1After 4 runs analyze the data- follow directions on p.75If data doesn’t look good redo it
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Date: 11/7/12 Objective: I can read and understand procedures to perform an activity on Newton’s second law of motion
work book to page 73-75Perform activityPerson #1 supplies-set up, take down, and care of cartPerson #2 operates the glxPerson #3 records dataPerson #4 read procedures
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Example of a conservative system: The simple pendulum.
• Suppose we release a mass m from rest a distance h1 above its lowest possible point.– What is the maximum speed of the mass and where does
this happen ?– To what height h2 does it rise on the other side ?
v
h1 h2
m
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Example: The simple pendulum.
y
y=0
y=h1
– What is the maximum speed of the mass and where does this happen ?
E = K + U = constant and so K is maximum when U is a minimum.
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Example: The simple pendulum.
v
h1
y
y=h1
y=0
– What is the maximum speed of the mass and where does this happen ?
E = K + U = constant and so K is maximum when U is a minimum
E = mgh1 at top
E = mgh1 = ½ mv2 at bottom of the swing
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Example: The simple pendulum.
y
y=h1=h2
y=0
To what height h2 does it rise on the other side?
E = K + U = constant and so when U is maximum again (when K = 0) it will be at its highest point.
E = mgh1 = mgh2 or h1 = h2
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Potential Energy, Energy Transfer and Path• A ball of mass m, initially at rest, is released and follows three
difference paths. All surfaces are frictionless 1. The ball is dropped2. The ball slides down a straight incline3. The ball slides down a curved inclineAfter traveling a vertical distance h, how do the three speeds compare?
(A) 1 > 2 > 3 (B) 3 > 2 > 1 (C) 3 = 2 = 1 (D) Can’t tell
h
1 32
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An experimentTwo blocks are connected on the table as shown. The tablehas a kinetic friction coefficient of k. The masses start at
rest and m1 falls a distance d. How fast is m2 going?
T
m1
m2
m2g
N
m1g
T
fk
Mass 1 Fy = m1ay = T – m1g
Mass 2 Fx = m2ax = -T + fk = -T + k N
Fy = 0 = N – m2g
| ay | = | ay | = a =(km2 - m1) / (m1 + m2)
2ad = v2 =2(km2 - m1) g / (m1 + m2)
K= - km2gd – Td + Td + m1gd = ½ m1v2+ ½ m2v2
v2 =2(km2 - m1) g / (m1 + m2)
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Date: 11/24 Goal: I can finalize my Science Fair project
Bell Ringer: If the force of gravity between two objects is 50N, what would the force be if the two object’s masses were doubled?
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Date: 11/24 Goal: Goal: I can finalize my Science Fair project
Final Project Presentation and ReportBy December 1st, complete your presentation and
report. You will share both your final report and presentation with Mr. Stoll on google drive.
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Date: 11/24 Goal: Goal: I can finalize my Science Fair project
Presentations