newton’s first and second law of motion 12/15/14 12/15 newton’s 1 st law of motion wb p. 73-75...
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Newton’s First and Second Law of Motion12/15/14
12/15 Newton’s 1st Law of Motion WB p. 73-7512/16 Newton’s 2nd Law of Motion WB p. 76
HW: TB p 138 #1-6 in NB12/17 Newton’s 2nd law of Motion WB p.77-8412/18 Newton’s 1st and 2nd law of Motion 12/19 Test
Date: 12/15/14 Goal: I can review and explain Newton’s first and second Law of Motion
A
Bell ringer: According to Figure 1, which of the following statement about sound pressure is most accurate? A.The sound pressure of a certain whale sound is higher than that of singing.B.The sound pressure of bird songs is higher than that of kettle drums.C.The sound presssureof a watch ticking is higher than that of gas turbine exhaust.D.The sound pressure of speech ishigher than that of turbine exhaust.
Date: 12/15/14 Goal: I can review and explain Newton’s first and second Law of Motion
Bell Ringer: Write out the following equations using words. For example:v=d/t Velocity equals distance divided by time
1.GPE= mgh2.a= vf-vi/t3.KE=1/2 mv2
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.
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
Date: 12/15/14 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
Date: 12/16/14 Goal: I can explain Newton’s first and second Law of MotionBell ringer: Based on the results of Experiment 2, it is reasonable to conclude that a lower percentage of catkin forms develops from a diet of :A.Oak catkins only than from a diet of oak catkins and leavesB.Oak leaves only than from a diet of oak catkins and tannins.C.Oak catkins and leaves than from a diet of oak leaves only.D.Oak catkins and tannins than from a diet of oak catkins and leavesExperiment 2Eggs were collected and hatched and were assignedone of four experimental groups. All caterpillars were raised at a temperature of 25o C in photoperiod of 14 hours of light
Today’s Activity12/16/14
1. Complete the data table on WB 75. 2. Complete a conclusion on page 76 in
the WB based on my observations.3. Review WB p.77-80
Constant Force DataWB p. 75
Total mass of cart and extra mass
Acceleration
Run 1 Cart 100g=.1kg
Run 2 Cart plus 100g =.1kg
200g=.2kg
Run 3 Cart plus 150g=.15kg
250g=.25kg
Run 4 Cart plus 200g=.20kg
300g=.3kg
.108 m/s/s
.025 m/s/s
.018 m/s/s
.008m/s/s
Support for the Conclusion WB p.76Claim based on evidence Evidence (observation)1.When a constant force acts on an object____________________________2.When the mass of an object is increased and themagnitude of the force on the object remains constantits acceleration__________________________________
it accelerates
decreases
The cart started out slow and moved faster
As we added more mass, the cart started out fast and moved slower
Conclusion WB p. 76
My claim is __________________________________________because_______________________________________________________________________________________________________Another claim is _________________________________________________________________________________________________because____________________________________________________________________________________________
when a constant force acts on an object
it accelerates the cart in our activity
accelerated when a constant force was applied to it.
I have also seen this in life when………
when the mass of an object is increased
and the magnitude of the force on the object remains
constant, its acceleration decreases
Directions: Answer the questions below In your notebookTitle 12/16 Conclusion
Skill Type and Level -Interpretation of Data 503 ACT Score Range - 24-27 Skill - Determine how the values of variables change as the value ofanother variable changes in a simple data presentation .1. Explain how the independent variable's change affected the
dependent variable
2. Is the conclusion consistent with the data? Explain why or why not
Date: 12/16/14 Goal: I can review and explain Newton’s first and second Law of Motion
Independently read and annotate WB p. 77-80
5 min
Date: 12/17/14 Goal: I can review and explain Newton’s first and second Law of Motion
Bell Ringer: A ball rolls from point A to B. Explain how the ball’s KE and GPE will be different from position A and B
A
B
Date: 12/16/14 Goal: I can review and explain Newton’s first and second Law of Motion
Independently read and annotate WB p. 77-80
5 min
Date: 12/16/14 Goal: I can review and explain Newton’s first and second Law of Motion
video
Date: 12/16/14Goal: I can review and explain Newton’s first and second Law
of MotionWorkbook p. 81Complete with your face partnerPartner A completes 1Partner B completes 2Share your answer with your partner, agree on
the answer and write down the answer
Continue this process through p. 81-82
Constant Force DataWB p. 75Total mass of cart and extra mass
Acceleration
Run 1 Cart 100g=.1kg
Run 2 Cart plus 100g =.1kg
200g=.2kg
Run 3 Cart plus 150g=.15kg
250g=.25kg
Run 4 Cart plus 200g=.20kg
300g=.3kg
.108 m/s/s
.025 m/s/s
.018 m/s/s
.008m/s/s
Total mass of cart and extra mass (kg)
Acceleration
Run 1 Cart .1 .108 .01
Run 2 Cart plus 100g =.1kg
.2 .025 .005
Run 3 Cart plus 150g=.15kg
.25 .018 .0045
Run 4 Cart plus 200g=.20kg
.3 .008 .0024
Date: 12/18/14 Goal: I can draw examples of Newton’s 1st and 2nd laws.
Bell Ringer: 1.What is the acceleration of the dog in the picture?F=ma
Today’s Activity12/18/14
Free body diagram video
Today’s Activity12/18/14
1 2 3 4
Draw and answer in your notebook
Today’s Activity11/15/13
Create a poster of Newton’s First Law of Motion
1. State Newton’s First Law2. Draw an example3. Explain your example
State Newton’s First Law• State Newton’s first law• Draw an examples
Explain your exampleThe blocks are at rest The blocks want to stay in motion
NamePeriodDate
State Newton’s 2ndLaw• State Newton’s 2nd law• Draw an examples
Explain your exampleThe force on the baseball is equal to the mass of the bat times the bat’s acceleration
NamePeriodDate
2nd poster
Newton’s 1st Law
Newton’s 1st Law
Newton’s 1st Law
Newton’s 2nd Law
What’s acceleration?
Newton’s 2nd Law
Newton’s 2nd Law
Workbook p. 81Complete with your face partnerPartner A completes 1Partner B completes 2Share your answer with your partner, agree on
the answer and write down the answer
Continue this process through p. 81-82
11/29 Roller coaster project
Textbook p. 4041.Target Audience2.Drawing Top view and a side view3.Calculations4.Description of modifications to the roller coaster.
Write 5 ideas5. Include : mass of car, safety, GPE at top of the
first hill, KE at the bottom of the first hill, velocity at several points
Date: 11/16 Goal: I can read a text and take Cornell Notes, identifying key terms, main ideas, and questions raised.
Bell Ringer: Define centripetal force and give me an example of centripetal force.
Today’s Activity11/16/11
1. Read Workbook p. 882. Take cornell notes in notebook.
Topic: WB p. 883. You have 4 minutes4. Students will be asked to explain
their notes
1.Video2.Read Workbook p. 893.Take cornell notes in notebook.
Topic: WB p. 893.You have 4 minutes4.Students will be asked to explain their notes
Due TodayNotebook and p. 85 of workbook will be
collected at the end of class
Date: 11/4/13 Objective: I can distinguish between mass and weight. I can also calculate weight in Newtons (N)
Bell Ringer:1. As the roller coaster travels from point A to B, how do its potential and kinetic energies change? 2. As the roller coaster travels from point D to E, how do its potential and kinetic energies change?
A
B
C
D
E
Date: 11/4/13 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
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)
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?
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
Exit QuestionWhat would happen to your mass and to your weight if you went to the moon?
Explain how you arrived at your answer.
Date: 11/5/13 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
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
11/4/13 Activity
Workbook page 65
Read demonstration as a group
Complete workbook p.67 independently
11/5/12 Activity
Complete workbook p.68
Date: 11/6/13 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
11/6/13 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
11/6/13 Objective: I can understand Newton’s first law of motion and apply the concept to my daily life
Video
11/6/13 Objective: I can understand Newton’s first law of motion and apply the concept to my daily life
Workbook page 72 complete TEJ
11/6/13 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.
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 ofPerson #2 operates the glxPerson #3 records dataPerson #4 manages and protects car
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
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
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.
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
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
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
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)