pre - roller coaster lab think now / do now...do now/ think now --> important vocabulary to...

Burns 7th Grade Accelerated

Name _________________________ per____ due date_________ mailbox_____

Pre - Roller Coaster Lab Think now / do now

1. ____ At which position is the PE the greatest? A. B. C. D. E. F.

2. ____ At which position is the KE the greatest? A. B. C. D. E. F.

3. ____ At which position has all the PE and KE been dissipated by friction? A. B. C. D. E. F.

4. How would you find (calculate) the PE of a coaster at position A. Discuss

5. How would you find (calculate) the KE of a coaster at position B. Discuss

Sketch Terminology

See the “Directions for labeling sketches on the laboratory cover.”

1 - How are you expected to label potential energy on your sketches for designed rollercoasters?

_______________________________________ write

2 - How are you expected to label kinetic energy on your sketches for designed rollercoasters?

_______________________________________ write

2 - What does DE – 1 & DE-2 stand for? ______________________ write

3 - What is dissipated energy? _____________________________ write

A

B C

D E

F


Mathematics of Rollercoasters – multiple choice below

PE = KE =

There are two physics equations to consider and take into account when designing a rollercoaster.

Mass is recorded in units of kilograms (kg) Height is recorded in units of meters (m)

Velocity is recorded in units of meters per second (m/s)

When reporting the potential energy PE of a coaster write the ### & the units kg(m2/s2)

When reporting the kinetic energy KE of a coaster write the ### & the units kg(m2/s2)

1.____ If we were to decrease the height of a roller coaster what would that do to the PE?

A. increase B. decrease C. remain the same D. cannot be determined

2. ____ If we were to increase the mass of a roller coaster what would that do to the KE?

A. increase B. decrease C. remain the same D. cannot be determined

3. ____ Potential energy is found by multiplying three numbers together. Mass times gravity (g)

times height.

A. TRUE B. FALSE C. cannot be determined

4. ____ Calculating kinetic energy includes multiple the mass by ½ and squaring the velocity?

A. TRUE B. FALSE C. cannot be determined

5. ____ If a coaster has 2 cars with a total mass of 200kg and a lift hill height of 20meters

what is the PE of this coaster with correct units? The gravitational constant is 9.8m/s2

A. 20000kg(m/s) C. 39200 kg(m2/s2)

B. 384160 kg(m2/s2 ) D. 39200 (m/s2)

6. ____ If a coaster has a total mass of 200kg and it has a (velocity)2 of (10 m/s)2 what is the

KE of this coaster with correct units? SEE EQUATION ABOVE

A. 2,000 kg(m/s) C. 20,000 kg(m2/s2)

B. 2,000 kg(m2/s2) D. 4,000,000 kg(m2/s2)

Accel 7


Name _________________________ per____ due date_________ mailbox_____

Roller Coaster Creator Lab

http://content3.jason.org/resource_content/content/digitallab/4859/misc_content/public/coaster.html -Link

Lab QUESTIONS:

1. What forms of energy are involved in a roller coaster? Circle all that apply.

2. Write down the name of your roller coaster? _____________________________

3. How many carts are you selecting for your initial run? _____

Directions for labeling sketches.

To receive full credit you must: (Option colored pencils)

1- Label potential energy spots along the coaster track. Label as follows:

For greatest potential (1SThill)(PE3) & then second hill (PE2), (PE1), etc.

2- Label these kinetic energy spots along the coaster track. Label as follows:

For highest speed near bottom of 1st hill (KE3), then (KE2), (KE1), etc.

3- Next label at least 2 sections of track where you would expect the greatest

dissipated energy transfer or friction zones as (DE-1) & (DE-2)

4- Record your mass; 1 car = 100kg, max height & max velocity in the table.

5- You will need to try & “capture” maximum velocity with careful observation. You

can simply pause [ ll ] while the cars are rolling down bottom of 1st hill.

http://content3.jason.org/resource_content/content/digitallab/4859/misc_content/public/coaster.html


Design your 1st coaster 1

Sketch your design here, LABEL: PE3, PE2, PE1, KE3, KE2, KE1 & DE zones DE2, DE1

4. Use the formulas to calculate and then record your maximum PE & KE for this coaster.

PE = KE = 5. When your coaster reached the end of the run it… Circle one of the following:

Crashed Success! Stuck

6. Record your Hills Loops and Difficulty Score __________ 7. Record your Screams Top Speed and Stop Accuracy Score ___________

8. Why do roller coasters crash at the end? Discuss using the following terms (kinetic energy,

dissipated energy & friction). _______________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________


Design or modify your 2nd coaster


9. Use the formulas to calculate and then record your maximum PE & KE for this coaster.

PE = KE = 10. When your coaster reached the end of the run it… Circle one of the following:



13. What did you modify/engineer differently to change and stop the cars at the offloading

platform? Use two or more of the following vocabulary: mass “# of cars”, GPE of hills,

potential energy, kinetic energy, friction.

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________

______________________________________________________________________


Design or modify your 3rd coaster bonus


14. When your coaster reached the end of the run it… Circle one of the following:



17. Was this coaster a success? Explain, discussing with the following terms (kinetic energy,

dissipated energy & friction.

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

PREPERATORY ASSIGNMENT – READ PAGE 7, then complete vocab matching PAGE 8.


DO NOW/ THINK NOW --> Important vocabulary to understand when designing a roller coaster:

Vocab Matching

inertia mass gravity height friction velocity

1. ______________: is calculated using both the speed and direction of a moving rollercoaster.

The greater the energy of a rollercoaster the greater this will be.

2. ______________: is the property of a body to resist any change in velocity. Objects in motion will

stay in motion or if at rest will stay at rest unless acted on by an outside force. A coaster must be put

into motion by a lift chain. Once rolling down hill only friction built up over the coarse of the track will

stop it.

3. ______________: is energy converted due to the motion of the coaster along the track and through

the air, into heat. This is a force that opposes motion between two or more surfaces in contact with

one another. Motion energy is commonly transformed into heat and sound when surfaces grid against

one another.

4. ______________: is determined by the total number of cars and their passengers in a roller coaster.

This variable is used in calculation of both potential and kinetic energy. This is the amount of matter in

an object.

5. ______________ Acceleration due to this value is a constant for mass on earth. Energy of the

coaster is converted to other forms when the coaster goes up hill having to work against this law of

physics and is also converted when the coaster accelerates down hill due to principle of physics as well.

6. ______________: This is determined by total elevation of the coaster on the very first hill.

This value is measured in meters and the greater this value the greater the potential energy of

coaster.

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