Free Fall on the Moon 2/9/15 2/9 Power and Safety TB p CN TB p 467 Essential Questions 2/10Free Fall on the MoonTB: p #1-5 2/11Free Fall on the Moon TB: p CN TB: 918 Essential Questions HW: TB p. 916 #1-3 2/12Roller Coaster Design HW: TB p. 919 #1-3,7 2/13Roller Coaster Design

Date: 2/9Goal: I can calculate work and power. Bell Ringer: 1. If a dog pulls a sled with a force 60N for 300 meters, what is the work done by the dog? W= F (d) 2. If it takes the dog 30 second, what is the power the dog produces? P=W/t

Date: 2/9Goal: I can calculate work and power. video

If you need more help: Khan Academy nce/physics nce/physics Physics Classroom

Date: 2/9Goal: I can understand safety considerations due to acceleration Independently read TB p and take Cornell Notes

Date: 2/9Goal: I can understand safety considerations due to acceleration With your partner complete TB p.467 Essential Questions

Date: 2/10Goal: I can compare the acceleration due to gravity on earth to gravity on the moon Bell Ringer: Which of the two examples supplied the most power? A boy that did 543 J of work in 4s? A man that did 756J of work in 5.5s? P=W/t

Bell ringer Boy P= 543/4s= W Man P=756/5.5s= W

Date: 2/10Goal: I can compare the acceleration due to gravity on earth compared to the moon MYP grades

Date: 2/10Goal: I can compare the acceleration due to gravity on earth to gravity on the moon TB p. 912

Date: 2/10Goal: I can compare the acceleration due to gravity on earth to gravity on the moon TB p. 912 Complete investigate #1-5 with your shoulder partner. Answer in your NB

Date: 2/11Goal: I can apply proportions to compare situations Three weightlifters were 1.5, 1.7, and 2.0 meters tall respectively. All three lifters raised an identical 75-kilogram mass above their heads. Which statement is correct? a.The 1.5-m tall lifter did the most work. b.The 2.0-m tall lifter did the most work. c.The 1.7-m tall lifter did the most work. d.All three lifters did the same amount of work.

Date: 2/11Goal: I can apply proportions to compare situations Complete TB p #1-5

Date: 2/11Goal: I can apply proportions to compare situations Independently read TB p and take CN

Date: 2/11Goal: I can apply proportions to compare situations Complete TB p.918 Essential Questions In you NB

Date: 2/11 Objective: I can work together as a team to develop a roller coaster project Read Directions

Date: 2/11 Objective: I can work together as a team to develop a roller coaster project Bell Ringer: 1.Who is the group of riders for your roller coaster? 2.What is one modification you made for you roller coaster? 3.What is the most thrilling part of your roller coaster?

Poster Board Roller coaster project Project responsibilities Partner #1 Roller Coaster design (with group input) Partner #2 Energy transformation Partner #3 Air resistance and friction Partner #4 Energy getting to the top Group: Target audience, Thrills, Description of modifications to the roller coaster. Include : mass of car, safety, GPE at top of the first hill, KE at the bottom of the first hill,

Roller Coaster Tall RC meters Middle RC10-20 meters Low RC5-10 meters GPE=mghmass= people + cars 1lbs =.5kg Car = 500 lbs Average adult= ?lbs

Date: 2/11 Objective: I can work together as a team to develop a roller coaster project

1 st Hill How high is the first hill? ? m

2 nd Hill Determine the height of the 2 nd hill? ?

Car mass Determine the mass of the roller coaster car and people. Why?

Work second to the top of the 1st hill 2.T he cars are accelerating at 3m/s2 up the 1st hill W= F (d) How do you get the force?

Gravitational Potential Energy 1.W hat is the GPE at the top of the first hill? Equation? GPE = mgh

Kinetic Energy What is the KE at the bottom of the first hill? How is KE at the bottom of the first hill related to GPE at the top of the first hill? KE bottom =GPE top

Velocity What is the velocity at the bottom of the first hill? What do we know so far? Workbook page 43

Velocity KE bottom =GPE top 1/2 mV 2 (Bottom) = mgh(top) Cancel out mass Arrange to solve for V V 2 =2gh Velocity at the bottom

Design Update your roller coaster design. ?m ?m/s

Roller Coaster Project Presentation Checklist The final presentation needs to include: Top and side view drawings Appropriate calculations of GPE, KE, velocity, and acceleration Written report of physics concepts used in the design of the roller coaster Groups will have 3 minutes to present

Poster board ?m ?m/s Coaster Name Audience and ModificationsCalculations -energy transfer -velocity -Points of acceleration Explain the roller coaster and its thrills Safety Friction and air resistance Add pictures and color Through out

Roller Coaster Tall RC meters Middle RC10-20 meters Low RC5-10 meters GPE=mghmass= people + cars 1lbs =.5kg Car = 500 lbs Average adult= ?lbs

Turn in Notebook at the front table Place your poster by turtle tank-with names Clean up your area Put supplies away

Turn in Notebook on counter Place your poster on desk up front Clean up your area Put supplies away