Physical Science CHS 2013-14

UNIT 2Motion, Forces, Energy

10/3/13• Entry Task

• If a car travelled 60 miles and it took the car 2 hours, how many miles per hour was its average speed?

• Mathematically speaking, what does the “per” in the above question mean?

• REMEMBER! All missing work for unit due tomorrow!• HOMEWORK – start WHEN FINISHED WITH TEST:

Read pages 76-80. Answer all questions #1-10 on page 80. Due Monday 10/7/13

Today’s Agenda

• Students needing more time on the test will be finishing their tests.

• HOMEWORK – start WHEN FINISHED WITH TEST: Read pages 76-80. Answer all questions #1-10 on page 80. Due Monday 10/7/13

• PLEASE BE RESPECTFULLY SILENT AND SEATED until all tests are turned in.

• EXTRA TIME? Complete the “Designing an Investigation” Crossword for extra credit

10/3/13

• Exit Task

• What is your average speed if you walk 4 kilometers in 4 hours?

• Hint: speed =

10/4/13

• Entry Task

• Say Something Nice• For 2 free points!• “What does the fox say?”

• Reminder HOMEWORK –: Read pages 76-80. Answer all questions #1-10 on page 80. Due Monday 10/7/13

Today’s Agenda – take notes with a partner pages 76-85…complete as HOMEWORK!

Vocabulary – give meaning in own words• Speed• Average Speed• Instantaneous Speed• Velocity• Distance• Constant speed• Slope

• How is velocity different than speed?

• How do you show forwards and backwards movement?

• What is the difference between “distance” and “change in position?

• What does a straight line mean on a position vs time graph?

• How can you recognize a relationship on a graph?

• How do you calculate slope? What does slope also indicate?

• Sketch a position vs time graph. • Sketch a speed vs time graph

Key Ideas – take notes on these ideas

What is the difference between average speed and instantaneous speed?

10/4/13

• Exit Task

• Trade and Grade week of 9/30-10/4• 2 more free points for your HIGH INTEGRITY grading• Please be sure to only give points when it is earned!

• Reminder HOMEWORK –: Read pages 76-80. Answer all questions #1-10 on page 80. Due Monday 10/7/13

• PLUS – C-notes vocab AND key ideas pages 76-85. Also due Monday 10/7/13

10/7/13Week of 10/7 to 10/11

• New Seating Chart• Entry Task

• Dino can leap 400 meters in 30 minutes. This includes brief sprints to catch butterflies. What is his average speed in m/min?

• What is his average speed in m/hr? • Can you tell his velocity? Why or why not?

Today’s Agenda

• Please get out p. 80 homework #1-10.• Trade and Grade.• Please also get out your C-notes vocab and

key ideas pages 76-85. • Brief review with name cards….• Turn in all homework!• See next slide…planning an investigation.

Planning a Speed Investigation• You will choose the independent variable. • GOAL: find a way to increase the velocity of the car

once it crosses the photogate at bottom of ramp. • Write down your independent variable choices:

– Adding mass - mass balls – 1,2,3– Placement of mass balls – front, middle, rear hole– Rubber bands – distance stretched - – # of rubber bands – 1,2,3– Height of ramp– Placement of photogate – high, medium, low– Temperature of car – cold, warm, hot– Oil on axle – light, medium, heavy application

GREEN SHEET – Designing an Investigation

• You will each complete all portions listed on green sheet in your composition notebooks.

• TITLE• Identify variables• Question• Hypothesis• Materials and PROCEDURE

– Be thorough and thoughtful with this section!– 3 trials for each of 3 conditions– Experimental Control Condition– Extra Validity Measures

• DATA TABLE – I will post this…you add your groups labels and measurements.

• Have design finished for tomorrow! Approval by start of class tomorrow…

Condition Trial 1Time

Trial 2Time

Trial 3Time

AverageTime

Calculated Speed =

Experimental Control Condition

Condition 1

Condition 2

Condition 3

10/7/13

• Exit Task

• What independent variable did your group choose?

• What is your Hypothesis?

10/8/13

• Entry Task

• What is the “experimental control condition”? • What are “extra validity measures”?• For this lab, what will you do for both of the

above?

Today’s Agenda

• Get approval for your lab design before you begin

• Be sure your data table is complete• Be precise in your measurements. • Complete data collection and calculating

averages and speed today. • EXTRA TIME? Begin designing your graph.

10/8/13

• Exit Task

• What 3 controlled variables did you include in your lab design?

10/9/13

• Entry Task

• We have calculated speed for our current lab: speed = • Why do you keep distance as 1 cm? • Hint: how wide is the flag on the car?

• HOMEWORK: Speed Practice Sheet. Due Friday 10/11/13

Today’s Agenda

• EACH PERSON WILL:• Collect and record data with their team.

Create a graph of your results – consult green sheet.

• Draft and write conclusion – consult green sheet.

• IN THEIR COMPOSITION NOTEBOOKS

10/9/13

• Exit Task

• Begin your conclusion from your data…• Answer your investigative question, “How does

( your chosen independent variable) • affect speed through the gate?” • Was your hypothesis supported?

• HOMEWORK: Speed Practice Sheet. Due Friday 10/11/13

• Review Rubric

10/10/13

• Entry Task

• If I told you an object ACCELERATES 9.8 m/s each second and I let it drop from a standstill…

• How fast would it be going after 1 second? • Draw a picture to help you!

• REMINDER HOMEWORK: Speed Practice Sheet. Due Friday 10/11/13

Today’s Agenda

• Complete graphs. • Complete conclusions• Share good student examples. • See how many points you will get. • Partner Discuss• Fix yours where you need to. • Be ready to turn in tomorrow.

10/10/13

• Exit Task

• What does “acceleration” mean? • How is this different than speed?

• REMINDER HOMEWORK: Speed Practice Sheet. Due Friday 10/11/13

•

10/11/13

• Entry Task

• Say Something Nice• For 2 free points!

• DUE DATES EXTENDED!!!• HOMEWORK: Speed Practice Sheet. Due

Monday 10/14/13• SPEED LAB: Due Monday 10/14/13

Today’s Agenda

• Pre-assessment of understanding of Motion, Forces, Energy.

• Your score will NOT be your grade. • You are graded on effort and completion.• At the end of the unit, you’ll be given a similar

assessment and you can track your growth!

10/11/13

• Exit Task

• Trade and Grade• For 2 free points…

10/14/13Week of 10/14 to 10/18

• Entry Task

• Which unit would you use with acceleration? • Why is the bottom letter “squared”?

Please take out your homework…• Trade and Grade math problems. Grader sign at top.

• DO NOT COPY ANSWERS FROM BOARD = cheating. • Self-assessment of lab investigation. • See Ms. Maring’s example. • Grade your own by carefully writing the points

earned in the margin.• ALSO, circle on your rubric what you did not

include. • PLACE YOUR RUBRIC in your comp book by the lab.

Turn in to comp book shelves. I will lock them.

Today’s Agenda

• Hand back papers and organize into binders. • If you are on the PASSING list for the Unit 1

test, you may design a lab based on one of the other independent variables. See sheet.

• Form a team of 3-4 and collect data for that independent variable on the provided data table.

• If you are in the REQUIRED REFLECTION group, you will join me for a discussion of the test

Condition Trial 1Time

Trial 2Time

Trial 3Time

AverageTime

Calculated Speed =

Experimental Control Condition

Condition 1

Condition 2

Condition 3

Passed Unit 1 test – “on your own” further investigative question lab

• You will choose a different independent variable from this list… – Adding mass - mass balls – 1,2,3– Placement of mass balls – front, middle, rear hole– Rubber bands – distance stretched - – # of rubber bands – 1,2,3– Height of ramp– Placement of photogate – high, medium, low

• Form a team of 3-4 with the same choice, write a brief lab design and collect data.

• Please clean up and return materials when finished.

REQUIRED REFLECTION – Unit 1 test• If you had a score of 60% or below, you are required to

reflect. • Please get out a piece of notebook paper. • Review reflection instructions. • You will be given the test back for this class period only. If

you need more time, please schedule with me before/after school to use the test.

• For each question you are seeking points back, • Write down the PROBLEM NUMBER and answer a, b, c, d.• The correct answer is shown in RED on your scan-tron paper.

You may write down the answers on your written sheet.• You will staple your scan-tron and written section to your

reflection.

10/14/13

• Exit Task

• How could you show a change in velocity WITHOUT a change in speed?

• What is another name for “change in velocity”?

10/15/13• Entry Task• Please sketch a graph of the following (x axis time; y axis velocity)• From the river to the woods, Little Long-legs Red Riding hood

accelerated from a starting velocity of 0.5 m/s to 1 m/s after 60 seconds. At the woods, she got scared and began running to grandmother’s house, accelerating from 1 m/s to 10 m/s in 30 seconds and then continued at that constant speed for the next 2 ½ minutes.

• HOMEWORK DUE THURSDAY 10/17/13: Read pages 86-93. Answer questions #1-11 on page 93.

• REMINDER – you will need to bring your calculator EACH day for the rest of this unit!!!

Acceleration

STANDARDS – performance expectations

• I can calculate the average acceleration of an object, given the object’s change in velocity with respect to time. (a =)

• I can explain how an object moving at constant speed can be accelerating.

Acceleration

• a change in velocity (speed or direction or both) over time– speeding up or slowing down– changing direction

• moving in a circle is always changing direction

http://phet.colorado.edu/en/simulation/moving-man

Changing direction

Negative acceleration

• if acceleration is a negative number it is referred to as negative acceleration or deceleration

Think “braking!”

The steeper the hill, the greater the acceleration…

Not very steep. Adding 1 m/s to the speed each second.

Very steep. Adding 2 m/s to the speed each second.

Greater acceleration will be a steeper slope on a speed vs

time graph

Zero Acceleration

• there is zero acceleration at constant speed because the speed does not change.

Think “cruise control”!(As long as direction stays the same…)

Math for Acceleration

a = acceleration = speed at finish = speed at startt = time = time at finish = time at startSometimes may

simply be “t”

a =

Same math as in your book…p 87

• Don’t write this down…

Example problem

• A car is traveling at 3.4 m/s. After 3 seconds, it is now traveling 8.2 m/s. Calculate its acceleration.

Looking for:

Solution:

Given:

Formula:

acceleration

V1 = 3.4 m/s V2 = 8.2 m/sT = 3 seconds

a =

a =

a = = 1.6

10/15/13• Exit task• A bike is traveling at 2.0 m/s. After 3

seconds, it is now traveling 5.0 m/s. Calculate its acceleration.

Looking for:

Solution:

Given:

Formula: HOMEWORK DUE THURSDAY 10/17/13: Read pages 86-93. Answer

questions #1-11 on page 93. REMINDER – you will need to bring your calculator EACH day for the rest of this unit!!!

10/16/13• Entry task• A bird is flying at 6.0 m/s. After 2 seconds,

it is now flying 2.0 m/s. Calculate its acceleration.

Looking for:

Solution:

Given:

Formula:

acceleration

V1 = V2 = T =

a =

Designing the Investigation

• Question: How does placement of photogates affect acceleration of the car?

• Make a prediction: • If the photogates are further apart• Then ________________________• Because______________________• Controlled variables:

Acceleration Lab• C-clamps at far top and far bottom of ramp. Ramp in 5th hole from bottom.• Photogate 1 will be at top black square mark. • Photogate 2 will be 10 cm below that. • Photogate 3 will be at first black mark below middle of ramp• Photogate 4 will be 20 cm below that.• Run car from top of ramp. Record time at each photogate. And Record time

between photogates. Repeat for 3 trials.• Sit down to calculate averages, velocity and acceleration. • We will calculate velocity at photogate 1 as v1.

• We will calculate velocity at photogate 2 as v2.• Then we can calculate acceleration as change in velocity with respect to time

between photogate 1 and 2. • We will calculate velocity at photogate 3 as v1.

• We will calculate velocity at photogate 4 as v2.• Then we can calculate acceleration as change in velocity with respect to time

between photogate 3 and 4.

Condition Trial 1Time

Trial 2Time

Trial 3Time

AverageTime

Calculated Speed = V =

AvgTime from A to B()

Calculated Accelerationa =

Photogate 1

tA = tA = tA =

=

Photogate 2

tB =

tAB =

tB =

tAB =

tB =

tAB =

=

Photogate 3

=

Photogate 4

tB =

tAB =

tB =

tAB =

tB =

tAB =

=

10/16/13

• Exit Task

• Did the car accelerate as it rolled down the ramp? In other words, were there changes in the car’s velocity over time (or between photogates)?

• Use data from your data table to back up your answer!

• REMINDER HOMEWORK DUE TOMORROW 10/17/13: Read pages 86-93. Answer questions #1-11 on page 93.

10/17/13

• Entry Task

• Imagine yourself on a bicycle or skateboard what outside influence would cause you to accelerate or decelerate?

• Per 1 – Earthquake drill prep• Please take out your homework - pages 86-93.

Answer questions #1-11 on page 93. • Trade and Grade – turn in.

Today’s Agenda

• You will be doing 1 of the following:• REFLECTION on Unit 1 Test – required if you

failed…optional if you want to improve your grade. TESTS ONLY AVAILABLE IN CLASSROOM.

• EXTENSION LAB for extra credit.• Acceleration Lab Analysis

Questions….otherwise this will be homework…

10/17/13

• Exit Task

• Trade and Grade week of 10/14 to 10/17.

• HOMEWORK – please complete Acceleration Lab Analysis Questions for Monday.

10/18/13 NO SCHOOL

• Teacher Inservice

10/21/13Week of 10/21 to 10/25

• Entry Task

• Explain all parts of a good conclusion. (Consult the green sheet.)

• What does “gives the data….” mean? How would a good conclusion include data? What kind of data?

• Please get out your acceleration lab and lab analysis questions (That was your homework!)

Today’s Agenda• Hand back papers and organize into binders. • Final day for Unit 1 reflections. • Play Jeopardy to study for Quiz tomorrow.

– RULES: – There will be two teams. – Each row on a team will have a whiteboard to write

answers. Nominate a recorder. – When the question is displayed, all rows will huddle

to discuss and record correct answer. – Each row to get the answer correct receives the

points at stake. – The team with the most points at the end WINS!

10/21/13

• Exit Task

• What do you need to study tonight? • Which resources will you use?

10/22/13• Entry Task

• Prepare for the quiz. • Please turn in your homework – acceleration

lab and analysis questions plus graphs.

• You may have a pencil or pen, calculator, and your acceleration notes ONLY on your desk for the quiz.

• Everything else under desks.

QUIZ• Talking or looking at another student’s paper will

be considered cheating = zero on quiz and reported.

• When completed, please check your work. • Raise your hand for an adult to pick up your quiz. • Finished early? Start on HOMEWORK. • Two parts Due Friday 10/25/13 :

– Read pages 97-104. Answer questions 1,2,4,6,7,8 on page 104.

– Read pages 107, 109, and 112 and 114-119. Answer questions 1,2,3,4,5,8 on page 119

10/22/13

• Exit Task

• None – testing

• HOMEWORK. • Two parts Due Friday 10/25/13 :

– Read pages 97-104. Answer questions 1,2,4,6,7,8 on page 104.

– Read pages 107, 109, and 112 and 114-119. Answer questions 1,2,3,4,5,8 on page 119

10/23/13

• Entry Task

• What would you call a “push or pull” on an object? • If this “push or pull” occurred on an object, what do

you think the results would be for the object? Describe in terms of speed, direction, or acceleration.

• HOMEWORK - Two parts Due Friday 10/25/13 :– Read pages 97-104. Answer questions 1,2,4,6,7,8 on page

106.– Read pages 107, 109, and 112 and 114-119. Answer

questions 1,2,3,4,5,8 on page 119

Forces

Newtons, Friction, Gravity, Weight and Free Body Diagrams

STANDARDS• When given specific scenarios, I can compare the motion of an object acted

on by balanced forces with the motion of an object acted on by unbalanced forces.

• I can predict how objects of different masses will accelerate when subjected to the same force.

• I can calculate the acceleration of an object, given the object’s mass and the net force on the object, using Newton’s Second Law of Motion (F=ma).

• Using everyday examples, I can illustrate that for every action there is an equal and opposite reaction (e.g., a person exerts the same force on the Earth as the Earth exerts on the person).

• I can predict how the gravitational force between two bodies would differ for bodies of different masses or different distances apart.

• I can explain how the weight of an object can change while its mass remains constant.

5.1 The cause of forces

• A force is a push or pull, or an action that has the ability to change motion.

• Forces can increase or decrease the speed of a moving object.

• Forces can also change the direction in which an object is moving.

5.1 Newtons

• Although we use pounds all the time in our everyday life, scientists prefer to measure forces in newtons.

• The newton (N) is a metric unit of force.

Forces act during Direct Contact

• A contact force is transmitted by matter directly touching other matter such as wind acting to slow a parachute.

Forces act over a distance

• The force of gravity between Earth and Moon appears to be what people once called “action at-a-distance”.

• Today we know that the gravitational force is carried from the Earth to the Moon by a force field.

Force of Gravity = weight

• The force of gravity on an object is called weight.

• At Earth’s surface, gravity exerts a force of 9.8 N on every kilogram of mass.

Weight depends on mass and gravity

A 10-kilogram rock has the same mass no matter where it is in the universe. On Earth, the10 kg. rock weighs 98 N.. On the moon, the same rock only weighs 16 N.

5.2 Friction

• Friction is a force that resists the motion of objects or surfaces.

• Many kinds of friction exist.

5.3 Adding forces

• To figure out if or how an object will move, we look at ALL of the forces acting on it.

• For example - Four forces act on a plane: 1. weight2. drag (air friction)3. the thrust of the engines, and 4. the lift force caused by the flow of air over the

wings.

5.3 Normal forces

• When the forces are balanced, the net force is zero.

• When the net force on an object is zero, we say the object is in equilibrium.

5.3 The free body diagram

• How do you keep track of many forces with different directions?

• Draw a free-body diagram that contains the objects, like a book on a table.

sliding friction

gravity

me pushing

normal force or the table

= direction of motion

= force vector

10/23/13

• Exit Task – based on the following forces, which way will the plane move?

10/24/13

• Entry Task

• Recall the cars on the ramps. At the moment you release the car, draw a free-body diagram showing all the forces.

• HOMEWORK - Two parts Due Friday 10/25/13 :– Read pages 97-104. Answer questions 1,2,4,6,7,8

on page 106.– Read pages 107, 109, and 112 and 114-119.

Answer questions 1,2,3,4,5,8 on page 119

Name_____ Partners _______ ________

Observing Forces at Work• Purpose

– Observe various forces and their direction at 1-8 lab stations.

• Procedure– Draw a free-body diagram of the forces involved at

each station.– vectors should show the DIRECTION and RELATIVE

STRENGTH of forces– try to label the vectors with the TYPE OF FORCE

» contact: sliding, rolling, static, fluid friction, or normal force…» non-contact: magnetism, electrical, gravity…

– if necessary, an explanation can accompany your free-body diagram or use different arrows to show movement

Today’s Agenda

• Finish notes. • Complete all the lab stations in any order in

your composition notebook.• When finished, sit down and work on the

worksheet of Free Body Diagrams. • Complete diagrams on the back or on your own

paper. • Finished early? Work on your homework for

tomorrow!

10/24/13

• Exit Task

• Draw the forces on the Newton’s Cradle at the moment of impact.

• Extra Time? Draw another when the ball is at the peak of its swing.

10/25/13

• Entry Task

• Say Something Nice

• Please take out your homework. What percentage did your class achieve?

• Make sure your name is at the top.• Trade and Grade.

Today’s Agenda

• Complete Lab Activity from Yesterday. • Work on and turn in Free Body Diagram

Practice Sheet. Due Monday. • Extra time? Next force lab – complete

activities at each station in composition notebook.

10/25/13

• Exit Task

• Trade and Grade

10/28/13Week of 10/28 to 11/1

• Entry Task

• Using the textbook or your own knowledge, explain Newton’s First Law of Motion.

• Review and Turn in Free Body Diagram Practice.

Today’s Agenda

• Watch Newton’s Laws of Motion video and take notes – 15 min

• Summarize the 3 Laws in your own words. - 5 min

• Watch Road Runner – 10 min– Raise hand to pause and discuss when you notice

a law in action – OR objects “ignoring” Newton’s Laws

• Review Project Details/Student work and Begin Brainstorm – continue tomorrow…

10/28/13

• Exit Task

• From your notes, explain Newton’s Second Law of Motion.

10/29/13

• Entry Task

• Watch Ms. Maring’s demonstration. {I will place a paperclip on a notecard on a beaker. I will flick the notecard strongly and the paperclip will fall into the beaker when the notecard moves out from under it.}

• Explain the motion of the objects in terms of Newton’s Laws.

• TURN IN YOUR HOMEWORK! The free body diagram practice!

Today’s Agenda

• GOAL – by end of class have storyboard draft complete.

• Who will your characters be? What will they do to show Newton’s 3 Laws?

• Whatever you do not finish is homework. • You will get peer feedback tomorrow in order

to revise and finalize your cartoon.

10/29/13

• Exit Task

• Briefly explain how the actions of your characters show Newton’s Laws:

• 1. Inertia – staying at rest or in motion• 2. F = ma (greater mass requires greater force

for equal acceleration)• 3. Equal and Opposite action/reaction forces.

10/30/13

• Entry Task

• If you triple the mass but keep the same force, what happens to the acceleration?

• NOTE: you can rewrite F = ma as • a = • REMINDER – you should have a complete

storyboard draft to share after entry task!

Today’s Agenda

• In your small groups, you will each share your cartoon – read it, point out how you showed the laws. Please take turns and don’t dominate the time.

• On Say Something Nice slips, each person will give feedback – one great thing and one area of concern.

• Following feedback, you can begin on final draft. Please consider suggested revisions.

Cartoon Peer Workshop•Groups of 3 or 4

•Each person present draft storyboard– explaining motion and ideas, and what you plan to add

•Suggest what feedback you are looking for – For example, help representing the laws, or help with your storyline, or help

with the artwork itself, or help with the dialog, etc

•Each listener will jot down some notes or comments for constructive feedback on the pieces of scrap paper.

•Do be respectful and follow workshop guidelines!

Peer Workshop Etiquette

• All comments have to be constructive. No trash talking allowed.

• You have to comment on the work in front of you, not what you would have written if it had been your idea. Even if you think your idea is better.

• Don't try to rewrite for the author. The author can do that him/herself. Just point out the areas of concern.

• (borrowed from Meir Ribalow of a NYC playwright’s group)

10/30/13

• Exit Task

• Look at the picture on page 136 in your textbook. Why, if the reaction/action forces are equal, does the elephant have less acceleration?

10/31/13

• Entry Task• Calculate the acceleration if a car’s mass is

1000 kg and a net force of 2000 N is exerted on the car. Show your work!

Today’s Agenda• Complete Final Drafts of cartoons.

– Your packet should be paperclipped and include:– Rubric on top with name– Summary of laws on notes– Rough Draft Story Board– Final Draft Cartoon– Written Summary of how you showed the laws

• NEWTON CARTOONS DUE FRIDAY START OF CLASS…but you can turn them in today…

• HOMEWORK – read pages 125-138. • On page 135, answer # 3,4,6,7• On page 143, answer # 6a, c• DUE MONDAY November 4

10/31/13

• Exit Task• How much force would you need to accelerate

a 20 kg object to 20 m/s2?

HOMEWORK – read pages 125-138. On page 135, answer # 3,4,6,7On page 143, answer # 6a, cDUE MONDAY November 4

11/1/13

• Entry Task

• Say Something Nice

• HOMEWORK – read pages 125-138. • On page 135, answer # 3,4,6,7• On page 143, answer # 6a, c• DUE MONDAY November 4

Today’s Agenda

• Introduce Egg Drop – designing your project is additional homework for the weekend.

• Complete self assessment regarding standards.

• Return and graph pre-assessment. • Set Goals.

Egg Drop – write in your composition notebook!

• Problem: Design a container that will keep an egg from breaking when dropped from the school roof.

• Constraints: When dropped from the roof, the egg can’t break.

• Criteria: – The vessel must be as low in mass and – As small in size as possible to keep the egg safe.

Background Information•Egg will be provided day of the drop – Tuesday, Nov. 5th

•No parachutes, propellers, gliders, or “He” balloons…

•No glass or anything dangerous•No motors or engines of any kind•The egg must be returned in original condition for points

Point Values for Container• Size:

– 10 cm X 10 cm = 4 points– 20 cm X 20 cm = 3 points– 30 cm X 30 cm = 2 points– Larger = 1 points

• Mass– Egg mass = 60 g.– Less than 50 g container = 4 points– 50 - 100 g container = 3 points– 100 - 150 g container = 2 points– 150 -200 or larger = 1 points

Due Monday:Labeled sketch with written description (4 pts.)

Due Tuesday:YOUR CONTAINER!!! You can bring it Monday (8 pts possible if both light and small)

Wednesday: Analysis (8 pts.)If your egg survived:1. Write an explanation of how your design protected the egg (include a discussion of forces).2. If you could redesign your container, how could you make it smaller and lighter, while maintaining its ability to protect the egg?If your egg did not survive:1. Write an explanation of why your design did not protect the egg (include a discussion of forces).2. If you could redesign your container, how could you make it work to protect the egg, while still trying to keep it as small and light as possible?

11/1/13

• Exit Task

• Trade and Grade