By: Jacob Johnson
Cary Kuliasha
Adam Watkins
Cheng Zhang
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
To build this project our
group started with a
metal ball, a wooden ball,
some plastic tubing, a
mouse trap, some bailing
twine, and wooden sticks
for support.
We attached the tubing to
the wooden poles and
then rigged the mouse
trap so that it would fire
another ball out once the
first one set off the trap


Our coaster starts by
dropping a metal ball
down the plastic tubing
Then the ball hits the
mouse trap causing the
mouse trap to go off and
subsequently start the
motion of our second ball
which also travels down
plastic tubing until
coming to rest


Our device uses
the earth’s
gravitational pull
to propel both of
the balls toward
the earth.
It also uses the
stored energy of
the mouse trap to
release the other
ball and send it
into motion

In conclusion by
using the power of
earth’s gravitational
field and the stored
energy in our
mousetrap our roller
coaster is able to run
its course for the
allotted 15 seconds
without human
intervention.