Physics schedule 10/26/15 10/26Gravitational Potential Energy and Kinetic Energy Read TB p 363-364 and…

Physics schedule 10/26/1510/26 Gravitational Potential Energy and Kinetic

Energy Read TB p 363-364 and take Cornell notes TB p. 367 #1-3

HW: Science Fair project experiment10/27 GPE and KE TB p 365-367 TB p. 367 #4-510/28 GPE and KE TB. TB p. 369 and video GPE KE10/29 TBp 370 #1-11 10/30 Quiz

HW: Science Fair project experiment

Bell Ringer: Below shows a cars velocity over time. 1. Explain where the car’s velocity change is the greatest?

Between t=0s and t=1s, or t=1s and t=2s, or t=2s and t=3s or are they all the same ?

2. Explain Why ?

Date: 10/26 Goal: I can understand how height affects velocity in terms of energy

Physics schedule 10/26/15Papers in Notebook

Physics schedule 10/26/15Science Fair – Experiment

Physics schedule 10/26/15Grab a textbook


Independently read textbook page 363-365 and take Cornell notes in your NB

Topic Title : TB p. 363 Physics talk

10 min


Independently read textbook page 363-365 and take Cornell notes in your NB


Complete #1-3 on page 367

Date: 10/27 Goal: I can understand how energy transfers between GPE and KE on a roller coaster. CCRS: Interpretation of Data (IOD) 16-19. Determine how the value of one variable changes as the value of another variable changes in a simple data presentation

Bell Ringer: According to students’results, as the length L(m) increases, What happens to the pendulum’s period (T)?


With your shoulder partner complete #1-3 on page 367Checking Up Questions


Class review textbook page 363-365

Complete #1-3 on page 367


Work with your shoulder partner tocomplete #1-3 on page 367


Independently read TB p. 365-367 and take Cornell notes in your NB


Independently read TB p. 365-367 and take Cornell notes in your NB

Complete #4-5 on p. 367

Bell Ringer: Calculate the gravitational potential energy of a boy with a mass of 50kg that is at the top of a sledding hill that is 15m high?

What is his KE at the bottom of a hill, if he has a speed of 6m/s?

Is this the same hill?

Date: 10/28 Goal: I can understand how energy transfers between GPE and KE on a roller coaster. CCRS: Interpretation of Data (IOD)20-23 Translate

information into a table, graph, or diagram

Bell Ringer: Calculate the gravitational potential energy of a boy with a mass of 70kg that is at the top of a sledding hill that is 25m high?

What is his KE at the bottom of a hill, if he has a speed of 9m/s?

Is this the same hill?



Video



With your shoulder partner complete TB p. 369 Essential Questions in your NB

Title: TB p.369 Essential Questions



Date: 10/29 Goal: I can understand how energy transfers between GPE and KE on a roller coaster. CCRS: Interpretation of Data (IOD)20-23 Translate information into a table, graph, or diagram

The data indicated that Compared to Ramp 2,Ramp 1 is:A.SmootherB.HigherC.SteeperD.Less steep


Complete the POGIL worksheet #1-6 with your group15min


Complete the POGIL worksheet #7-13 with your group15min


Quiz tomorrow

Complete TBp 370 #1-10 to help you reviewReview NotesReview Activities

Date: 10/30 Goal: I can demonstrate my knowledge of energy transfers between GPE and KE.

With your shoulder partner complete TB p. 371 #7,9,10 in your NB

Responsibilities

Person 1 measurementsPerson 2 velocimeterPerson 3 starts and stop bobPerson 4 reads directions

Date: 10/26 Goal: I can investigate the relationship between speed at the bottom of a pendulum and height of the period of its swing. CCRS: IOD – 16-19: Interpretation of Data (IOD) Determine how the value of one variable changes as the value of another variable changes in a simple data presentation

• If engineers can use potential energy (height) of an object to calculate how fast it will travel when falling, can they do the reverse and calculate how high something will rise if they know its kinetic energy (velocity)? (Answer: Yes, as long as you know either height or velocity, you can calculate the other.)For what might an engineer use this information? (Answer: To create other amusement park rides besides roller coasters, in racing, or how to launch something, etc.)Why did the pendulum have the same period even when the weight started from different heights? (Answer: The period of a pendulum is only dependent on the length of the pendulum, which is consistent no matter where the weight starts.)

What affects speed?CCRS: IOD – 16-19: Interpretation of Data (IOD) Determine how the value of one variable changes as the value of another variable

changes in a simple data presentation

Height Velocity at bottom

Complete Part B 1-3c in your notebook



Based one your best fit graph, what would you predict the velocity to be at a height of 33 cm?

Height Velocity at the bottom Velocity squared




Height

Velocity




Height

Velocity


1. Complete #3-4c on page 3622.Independently read textbook page 363-365 and take Cornell notes in your NB


10 min

Potential Energy• Potential energy (PE) =

stored energy of position possessed by an object

Examples:• The ball of a demolition

machine• A stretched bow• Coconuts in a tree• There are 2 types of

potential energy:

1. Gravitational Potential Energy• Gravitational potential energy =

(PEgrav) the energy stored in an object as the result of its vertical position or height.

• The energy is stored as the result of the gravitational attraction of the Earth for the object.

• Example: The PEgrav of the massive ball of a demolition machine is dependent on two variables - the mass of the ball and the height to which it is raised.

Kinetic Energy• Kinetic Energy = (KE) energy of motion• There are many types of kinetic energy, but

we are going to focus on only one type: energy due to motion from one location to another.

• Examples:– Roller coasters going downhill– Skateboarding up and down a half-pipe– Wind

Calculating GPE• GPE = mgh• m = mass of object (kg)• g = acceleration due to gravity

– on Earth it equals 9.8 m/s2

• Δ h = change in height of object (meters)• PEgrav units are Joules(J) because we are measuring

energy.• Recall the weight (w) is mass x gravity (w = mg). As a

result, PEgrav can also be calculated if you are given weight.– PEgrav = wΔh

Calculating KE

• KE = ½ m v2

• ½ = 0.5 or half (constant with no units)• m = mass of object (kg)• v2 = velocity2 or velocity x velocity (m/s)• KE units are Joules because we are measuring

energy.




Height Velocity at the bottom Velocity squared




Height

Velocity

Science Fair Interdisciplinary Lesson

Start of Experiment

Date: 10/21 Goal: I can understand how energy transfers between GPE and KE on a roller coaster. CCRS: Interpretation of Data (IOD) 16-19. Determine how the value of one variable changes as the value of another variable changes in a simple

data presentation

Independently read TB p 363-365 and take Cornell notes.

10 minutes


data presentation

With your partner complete Physics POGIL TB p363-364 #1-6 10 minutes


data presentation

With your partner complete Physics POGIL TB p363-364 #1-6Class Share 10 minutes


data presentation

With your partner complete Physics POGIL TB p363-364 #1-6 and 7-13 10 minutes


data presentation

With your partner complete Physics POGIL TB p363-364 #7-13 Class Share10 minutes


data presentation

Bell Ringer: Calculate the gravitational potential energy of a boy with a mass of 50kg that is at the top of a sledding hill that is 15m high? What is his KE at the bottom if he has a speed of 6m/s?



Take NotesScience Fair Experiment due 11/10• Data Tables and Graphical Representation of Data

– You will turn in the data you collected from 10 or more trials (in the form of a table) and at least one graph showing the best values.



Get a textbookIndependently read TB p 365-367 and take Cornell

notes

10 min



Bell ringer: 1. What is the GPE of a 25Kg girl at the top of a slide that is 3 m tall?

2.What would be her KE half way down the slide?

GPE= mgh KE = 1/2 mv2

Conservation of Energy say that GPE + KE = MEME= mechanical energy ( total energy of the system)



With your shoulder partner complete TB p. 370 #1-6

10 min



With your shoulder partner complete TB p. 370 #1-6

Class discussion

ME = KE + GPE



Due todayTB p. 362 part B in your NBTB p 363-364 and take Cornell notes POGIL on TB p 363 handout #1-13 HW: TB p. 367 #1-5HW: TB p. 371 #7-11



Bell ringer: Fill in the a chart based on the pendulum’s positions.mass of bob=.4kg height at #1=.24m



Position of bob Height (m) GPE (J) =mgh KE (J)=1/2 mv2 GPE + KE (J)

1 .24m

2 .12m

3 0 m

GPE and KE TB. WB p. 49-50

ME = KE + GPE



Video GPE KE



video

Date: 9/24 Goal: I can understand how energy transfers between GPE and KE on a roller

coaster.

Bell Ringer: Which ball will have the greatest velocity at the bottom of the ramp, if they all start at the

same height? Why?


A B C DAll the same

Open your notebook to CN from TB p. 362


A B C DAll the same

Quiz


A B C DAll the same

Distance stays the same and height changes

Title: 10/7-8 Homework: In your notebook, write a summary of the

relationship between speed at the bottom of a ramp and both height and distance of the ramp. Based on the results from your activity. Did the height or distance change have a greater effect on the speed at the

bottom of the ramp? (5-10 sentences) This is on the weekly schedule on Mr. Stoll’s

web page

10/9 xXx Movie CalculationVin Deisel is trying to catch a jet boat to dismantle a bomb. He has to drive his GTO 50 miles to catch the

boat. The boat is traveling 10 miles up river at a velocity of 40 mile per hour.

1.How do you calculate the average velocity at which 50miles 10miles

the GTO must travel? 40mi./h

2. Is this possible in real life? Why or Why not?

Last week

Date: 9/17 Goal: I can investigate the relationship between speed at the bottom of a hill

and height and distance of the ramp.

Read investigate part A as a class 2a. Height is constant 20 cm and distance changes

2b Distance is constant 40cm and height changes


and height and distance of the ramp.Create a graph in your notebook

Height constant 20CM Distance velocity

Distance constant 40CM Height velocity


and height and distance of the ramp.Create a graph in your notebook

Person 1 measurementsPerson 2 velocimeterPerson 3 starts and stop ballPerson 4 changes height and distance

ResultsQuestion #2a Height 20cm=.2m

Distance Speed

1

2

3

Question #2b Distance 40cm=.4m

Height Speed123

What affects speed?

Question #2b Distance 40cm=.4m

Height Velocity

1 14cm 3.19km/h

2 17cm 4.96km/h

3 22cm 5.65km/h

Question#2a Height 30cm=.3mDistance Velocity1 90cm 3.64km/h

2 25cm 3.75km/h

3 60cm 3.59km/h

Answer in you Notebook: What created a greater increase in speed ?


Bell Ringer: Based on the pendulum activity yesterday, explain how height affects the velocity of the pendulum at the bottom.


Review Results Ramp activity Part A

Review Results pendulum activity Part B


WB p. 29-31

Documents

Physics schedule 10/26/15 10/26Gravitational Potential Energy and Kinetic Energy Read TB p 363-364 and…