Newton s First Law of Motion 12 2 13 12 6 13

Newton’s First Law of Motion 12/2/13 – 12/6/13 12/2 Newton’s 1 st Law of Motion WB p. 76 HW: TB p 138 #1 -6 in NB 12/3 Newton’s 2 nd law of Motion WB p. 77 -84 12/4 Newton’s 1 st and 2 nd law of Motion / Quiz

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= mgh 2. a= vf-vi/t 3. KE=1/2 mv 2

Today’s Activiy 1. Complete the data table on 75. 2. Complete a conclusion on page 76 in the WB based on my observations. 3. Review WB p. 77 -80

Constant Force Data WB p. 75 Total mass of cart and Acceleration extra mass Run 1 Cart 100 g=. 1 kg . 108 m/s/s Run 2 Cart plus 100 g =. 1 kg Cart plus 150 g=. 15 kg Cart plus 200 g=. 20 kg 200 g=. 2 kg . 025 m/s/s 250 g=. 25 kg . 018 m/s/s 300 g=. 3 kg . 008 m/s/s Run 3 Run 4

Support for the Conclusion WB p. 76 Claim based on evidence Evidence (observation) 1. When a constant force The cart started out acts on an object_______ slow and moved faster it accelerates ___________ 2. When the mass of an As we added more object is increased and the mass, the cart magnitude of the force on started out fast and the object remains constant moved slower its acceleration______ decreases ____________

Conclusion WB p. 76 when a constant force acts on an object My claim is _______________because__________ it accelerates the cart in our activity accelerated when a constant force was applied to it. __________________________________________ when the mass of an object is increased Another claim is ______________ and the magnitude of the force on the object remains _____________________ constant, its acceleration decreases ______________because______________________________________ I have also seen this in life when………

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

Goal: I can review and explain Newton’s first and second Law of Motion As a class complete WB p. 76

Goal: I can review and explain Newton’s first and second Law of Motion Independently read annotate WB p. 77 -80 12 min

Workbook p. 81 Complete with your face partner Partner A completes 1 Partner B completes 2 Share your answer with your partner, agree on the answer and write down the answer Continue this process through p. 81 -82

Goal: I can draw examples of Newton’s 1 st and 2 nd laws. Bell Ringer: 1. What is the acceleration of the dog in the picture? F=ma

Today’s Activity Create a poster of Newton’s First Law of Motion 1. State Newton’s First Law 2. Draw an example 3. Explain your example

Name Period Date State Newton’s First Law • State Newton’s first law • Draw an examples Explain your example The blocks are at rest The blocks want to stay in motion

Name Period Date 2 nd poster State Newton’s 2 nd. Law • State Newton’s 2 nd law • Draw an examples Explain your example The force on the baseball is equal to the mass of the bat times the bat’s acceleration

Newton’s 1 st Law

Newton’s 1 st Law

Newton’s 1 st Law

Newton’s 2 nd Law

What’s acceleration? Newton’s 2 nd Law

Newton’s 2 nd Law

Workbook p. 81 Complete with your face partner Partner A completes 1 Partner B completes 2 Share 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. 404 1. Target Audience 2. Drawing Top view and a side view 3. Calculations 4. Description of modifications to the roller coaster. Write 5 ideas 5. 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: 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 Activity 1. Read Workbook p. 88 2. Take cornell notes in notebook. Topic: WB p. 88 3. You have 4 minutes 4. Students will be asked to explain their notes

1. Video 2. Read Workbook p. 89 3. Take cornell notes in notebook. Topic: WB p. 89 3. You have 4 minutes 4. Students will be asked to explain their notes Due Today Notebook 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 E B D C

Date: 11/4/13 Objective: I can distinguish between mass and weight. I can also calculate weight in Newtons (N) Activity Titled : Textbook p. 392 Answer Investigate Part A questions 1 -5 in your Notebook Answer 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?

Tennis ball House fly Elephant 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. peanut Bowling ball

Exit Question What 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 50 kg ball? Fw=mg

Tennis ball House fly Elephant 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. peanut Bowling ball

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 activity Yesterday, if the roller Coaster starts at point B What point will the cart Reach? D or E or F Explain why

11/6/13 Objective: I can understand Newton’s first law of motion and apply the concept to my daily life Independently read 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 -75 Perform activity Person #1 supplies-set up, take down, and care of Person #2 operates the glx Person #3 records data

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 -75 Perform activity Person #1 supplies-set up, take down, and care of cart Person #2 operates the glx Person #3 records data Person #4 read procedures

Example of a conservative system: The simple pendulum. • Suppose we release a mass m from rest a distance h 1 above its lowest possible point. – What is the maximum speed of the mass and where does this happen ? – To what height h 2 does it rise on the other side ? m h 1 h 2 v

Example: The simple pendulum. – 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. y y=h 1 y=0

Example: The simple pendulum. – 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 = mgh 1 at top E = mgh 1 = ½ mv 2 at bottom of the swing y y=h 1 y=0 h 1 v

Example: The simple pendulum. To what height h 2 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 = mgh 1 = mgh 2 or h 1 = h 2 y y=h 1=h 2 y=0

• 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 dropped 2. The ball slides down a straight incline 3. The ball slides down a curved incline After traveling a vertical distance h, how do the three speeds compare? 1 3 2 h (A) 1 > 2 > 3 (B) 3 > 2 > 1 (C) 3 = 2 = 1 (D) Can’t tell

An experiment Two blocks are connected on the table as shown. The table has a kinetic friction coefficient of mk. The masses start at rest and m 1 falls a distance d. How fast is m 2 going? T Mass 1 fk S F y = m 1 a y = T – m 1 g Mass 2 S Fx = m 2 ax = -T + fk = -T + mk N m 1 S F y = 0 = N – m 2 g m 1 g | ay | = a =(mkm 2 - m 1) / (m 1 + m 2) 2 ad = v 2 =2(mkm 2 - m 1) g / (m 1 + m 2) DK= - mkm 2 gd – Td + m 1 gd = ½ m 1 v 2+ ½ m 2 v 2 =2(mkm 2 - m 1) g / (m 1 + m 2) T N m 2 g