Transcript Powerpoint_BottleCar

Bottle Car of Doom
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By: Mikaela Anderson
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Sean Lewis
Copper Hills High School
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Engineering Goal
Build a car that will reach the end of the track in less than 2 seconds
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Data:
Research Summary:
Due to time constraints and direction from Mr. Lund, a data table was not
able to be fit in and created.
Newton invented with 3 laws:
1. An object in motion stays in motion and an object in rest will stay at rest
unless acted upon by an unbalanced force.
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2. Force equals mass multiplied by acceleration F=ma.
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3. For every action there is an equal and opposite action.
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Hypothesis:
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Having a car with smaller wheels will go faster because it causes less
friction upon the floor.
Analysis:
Of all the graphs, the equations are linear. Distance: As time
increases so does distance, almost equally proportionate to every
trial. Distance=time + D0 The slope represents the car traveling on the
track, and the y-intercept is 0 and represents the car at the starting
line. Velocity: The velocity’s equation is V=v0-Ff (starting velocity
minus friction) through all 3 trials the velocity stayed constant and
then decreased as time went on due to friction. The slope of the
velocity was linearly decreasing and represents the car’s speed. The
Y-intercept is zero and represents the car when it’s at rest with a
velocity of 0 m/s. The acceleration, as shown by the graphs, also was
linear and increased over time which in no way reflects on the
velocity graphs as it should for an unknown reason. In the 3 trials
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A=m/s . The slope represents the car as it accelerated from rest.
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Materials:
Popsicle sticks, bull clips, packing tape, hot glue gun, hot glue,
construction paper, 2 pencils, 4 bottle caps (same size), one 1 liter bottle,
and plenty of patience.
Procedure:
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Construct a sturdy frame out of popsicle sticks and hot glue to house your bottle
Construct boxes for the pencils to spin freely in.
Wrap both in tape for less friction.
Make a cool decoration out of construction paper and attach to frame and bottle.
Make a wire guide out of popsicle sticks and bull clips
Attach everything together
Hot glue the centers of the ends of the pencils to the 4 bottle caps
Enjoy the bottle-car
Conclusion:
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Smooth wheels work better than wheels with grip because the reduce the friction and allow the bottle car
to continue on its path longer.
Making a car aerodynamic also helps decrease the drag, or friction of air, on the vehicle.
Understanding and utilizing Newton’s three laws helps make sense of how the car will move.
The bulkier the car, the slower it goes.
The smaller the car, the faster but more uncontrolled and unpredictable it becomes.