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Roller Coaster PBL
BY: KAYLA DOS SANTOS, JOSHUA FITCH, AND CAELIN GOODNER
Rough Sketch/Diagram

As you can see, this is an example of our sketch of the roller coaster and
where we thought there would be a maximum and minimum of both
potential and kinetic energy

Once we got the basic idea of how we wanted
The coaster, we went right away and got busy with it
Video of How the coaster goes
Average Speeds
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We tested out roller coaster by doing three trials and here were the results
( we converted meters to centimeters 3.5m to 350cm)
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Trial one: 350cm/2.91s= 120.3cm/s (speed)
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Trial two: 350cm/3.34s= 104.8cm/s (speed)
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Trial three: 350cm/3.49s= 100.3cm/s (speed)
Average Speed of all three trials: 108.5cm/s
Energy Transformations
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Potential Energy: When at the top of the highest points in the coaster, the
drop and the loop, potential energy is gained so it could be transferred
into kinetic energy

Mechanical Energy(only at the start): We let go of our ball so it can have
at least a little start to be able to go through the whole coaster

Kinetic Energy: As the marble goes down the slopes of both the drop and
the loop, the potential energy that was gained is transferred into kinetic
energy
Law of Conservation of Energy

First off, the Law of Conservation of energy means that energy is not
created nor destroyed so the potential energy used has to be the same
amount of kinetic energy or some other type like sound

At the start of the coaster, it begins with potential energy while going
down the drop it becomes kinetic energy (one of the max points)

Then comes the loop, while going up potential energy is being gained
while going down kinetic energy is being gained
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The same goes for the hills
GPE, KE and Acceleration

Mass x gravity x height=GPE: 35,371J

1/2 x mass x velocity2=KE: 235,445J

V2-v2/time=Acceleration(all averages): 3.3(v2)-0.5(v1)/3.2s= 0.875J
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
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