The Great Friction RaceThe Great Friction Race

MaterialsMaterials Cardboard Base (42 x 32 cm)Cardboard Base (42 x 32 cm) 2 Smaller Cardboard Pieces 2 Smaller Cardboard Pieces 1 File Folder1 File Folder 1 Pipe Cleaner1 Pipe Cleaner 10 pieces of spaghetti 10 pieces of spaghetti 1 sheet of newspaper1 sheet of newspaper 1 Paper Towel Square1 Paper Towel Square 1 meter of masking tape1 meter of masking tape

- You will also get a glue gun to help - You will also get a glue gun to help assemble your design.assemble your design.

RulesRules -read the fine print! -read the fine print!

1.1. The time will be started when you release the The time will be started when you release the marble at the top and it will be stopped when the marble at the top and it will be stopped when the marble reaches the bottom of the cardboard marble reaches the bottom of the cardboard (42cm). (42cm).

2.2. The marble must be moving at all times once it is The marble must be moving at all times once it is dropped! If the marble stops or gets stuck, your dropped! If the marble stops or gets stuck, your group will be disqualified.group will be disqualified.

3.3. The only two forces that can affect the marble’s The only two forces that can affect the marble’s motion are gravity and friction.motion are gravity and friction.

4.4. You cannot use more than the provided supplies.You cannot use more than the provided supplies.5.5. Any of the supplies can be altered EXCEPT the Any of the supplies can be altered EXCEPT the

cardboard base MUST remain at its original cardboard base MUST remain at its original dimensions.dimensions.

6.6. The marble cannot come in contact with any glue The marble cannot come in contact with any glue (only the materials listed to the left can affect the (only the materials listed to the left can affect the marbles motion).marbles motion).

7.7. Nothing can be attached to the marble.Nothing can be attached to the marble.8.8. You cannot touch any of the materials once your You cannot touch any of the materials once your

marble is dropped.marble is dropped.9.9. Your cardboard base must be free standing with Your cardboard base must be free standing with

no props outside of the given supplies.no props outside of the given supplies.10.10. Your design must be approved by Mr. Bergmann Your design must be approved by Mr. Bergmann

to be considered for the contest.to be considered for the contest.11.11. Mr. Bergmann can make up any new rules at Mr. Bergmann can make up any new rules at

any time :) any time :)

Objective: Move a marble from the top of the cardboard to the bottom the slowest!

The Great Friction RaceThe Great Friction RaceJournal EntryJournal Entry

1.1. Create a new journal entry for the Create a new journal entry for the “Great Friction “Great Friction Race”Race” and update your table of contents. and update your table of contents.

2.2. Draw a sketch of your final board design.Draw a sketch of your final board design.3.3. If you wanted to sell your design to a very serious If you wanted to sell your design to a very serious

marble racer who was willing to pay good money for marble racer who was willing to pay good money for the slowest marble in all the land…how would you the slowest marble in all the land…how would you convince him to buy your design? convince him to buy your design? Write a well Write a well constructed paragraph explaining why you think constructed paragraph explaining why you think that your design will get the marble to the bottom that your design will get the marble to the bottom of the board the slowest.of the board the slowest. Use Use ALLALL of the following of the following words in your writing to convince them that yours will words in your writing to convince them that yours will win.win.

– Gravity, Mass, Friction, Velocity, Acceleration, Gravity, Mass, Friction, Velocity, Acceleration, Distance, Time, MomentumDistance, Time, Momentum