By Lee Kirwin, Noah Smith, Walker Longworth, and
Samuel Parral
Task Outline
 Noah Smith – Team Project Coordinator
 Samuel Parral – Design Coordinator
 Walker Longworth – Testing Coordinator
 Lee Kirwin – Presentation Coordinator
Design
Flowchart
First our group decided what kind of car we
wanted to build. We decided to compete with
a car designed for distance.
After we have all of our materials we will cut
them all to shape and size.
After we had the initial chassis built we built
the mousetrap device using hot glue, tape,
rubber band, and a fishing pole.
After talked about the kind of car we wanted
to design and build, our design Coordinator
started designing our car on AutoCAD.
When we have our materials cut to size and
our wheels in place, we will start the assembly.
Our first test went well we wound the string
around the axel and let go. It went further
than we thought it would go.
After we have
our design, we
will get all of
our materials.
We started to put our
materials into a car.
We used the wood
and straws and pieces
of a fishing rod for the
axels and chassis.
We made some
revisions and tested
it again.
Labeled design schematic
Design
 We thought over the design of our car, and eventually
agreed that the fishing pole would work best with the
mousetrap for power. We had to eliminate problems
such as a weak chassis at first, which we fixed by
replacing it with a stronger material. The same
happened with the axles. The chassis went from K’nex
to balsa wood, and the axles from K’nex to pieces of
fishing pole.
Continued
 We worked as a group to build the project. We each
worked on certain parts and brought in materials that
without, we wouldn’t have been able to build the car as
planned.
Pictures
Velocity Graph
Test
1
Distance
5
Time
1.36
Velocity
3.676470588
2
10
2.87
3.484320557
3
4
15
20
3.3
4
4.545454545
5
5
25
4.84
5.165289256
6
30
5.58
5.376344086
7
35
6.58
5.319148936
8
40
7.27
5.502063274
45
8.03
5.603985056
Velocity graph
Velocity
6
5
4
3
Velocity
2
1
0
Time
1.36
2.87
3.3
4
4.84
5.58
6.58
Explained
 The velocity of our car steadily increased as it became
faster. It remained steady most of the time, dropping
then rising only twice. The highest velocity we
received was at 6.58 seconds.
Acceleration Graph
Test
Distance Ft.
Time
1
5
1.36
2
10
2.87
3
15
3.3
4
20
4
5
25
4.84
6
30
5.58
7
35
6.58
8
40
7.27
45
8.03
Acceleration graph.
Accleration
3
2.5
2
1.5
Accleration
1
0.5
0
Distance
10
20
30
Explained
 The speed of our car decreased as the string ran
leaving it with no power source. After the string was
gone, it relied on the weights on the wheels to push it
the rest of the distance. We noticed a slight drop and
increase in speed between the five and ten foot mark.
Revision flow chart
After our first test, we decided to
change the length of the draw
string.
We had to re-glue the straws many
times which gave the axel room to
spin.
Then after our second test we decided to
change the wheels from, K’nex wheels to
cd’s
The final fixing was to put weights on the
wheels so it would keep moving even
after the acceleration had stopped.
A revision.
Revised design
 We tested our and it did not do so well.
 We made some revisions to our car.
 The revisions we made:
 We put cd wheels on it
 We added weight to the wheels so they would turn
faster and with more power.
 We shortened our string
 We also centered our fishing rod.
Summary
 In the beginning, we experienced problems with our
car, but through teamwork, we sorted through them.
Doing this enabled us to build a working car, capable
of traveling up to and possibly over sixty feet.
Video
Pictures