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The marble is dropped into a hole and rolls down a ramp. Then it drops into another hole and bounces off several slabs of cardboard. It takes the marble 3.6 seconds to roll down what I have so far. The failure point is when it just rolls around the bottom of the box since I haven't added anything there yet.

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The problem point is that the ball only sometimes rolls into the second hole and sometimes rolls out.
Action Points:
-Roll off a ramp and bounce off another cardboard.
- Go down a cardboard funnel.
- End in a cup.
These will be challenging to all fit inside of my box, but I can try to get as many of them as I can. I want to have the marble run slowly and smoothly through the two boxes, ending in a cup.

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What ideas do these mini-
challenges give you for completing the end of your roller coaster?

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These mini projects gave me the idea to use a recyclable tube. I have a tube that was used for wrapping and it is cardboard so I will use that.

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1) Run your marble through the roller coaster and time. Do this at least a few times to get an average. Record the average time here.
2) Calculate the GPE/KE at the highest, halfway and lowest points of your roller coaster structure as it
stands right now.
3) List what still needs to be done in the next class to finish the roller coaster. Record this here.

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The avarage time of runnig. the marble through my marble run was 3.3427 seconds. The highest GPE was 17.64, then at halfway the GPE was 8.82 and the KE at the end was 17.64.
I need to add the tube to the bottom of the.

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1) Take final overview picture of your roller coaster. Annotate/Caption the picture with the information:
o all “exciting” elements
o GPE/KE at highest, halfway and lowest points.
Give your roller coaster an exciting name.
2) Upload a working test of your roller coaster here.