Balloon Powered Race Cars - Ms. Reyna



Balloon Powered Race Cars Name________________________________Pd:____

Objectives:

• To create a balloon powered race car for maximum speed and distance

• To incorporate Newton's Laws of Motion

Due dates:

• Project introduced Thursday, November 12, 2015

• FBD and 3 laws due November 18, 2015

• Citations, Materials, and Methods due November 21, 2015

• Completed car (designed and assembled), Mon, Dec. 7, 2015 (Bonus if ready to race by Dec. 4, 2015) Brought to class for data collection and stored in labeled shoe box. Full name/period

• Project documentation, Tues, Dec. 8, 2015 – (final documentation can be electronic or paper report; poster, ppt, prezi)

• 20 % deduction for late projects

Materials:

• 9 inch balloon is standard

• pen barrel or straw

• various materials to construct the racers

Rules:

• The car must be powered by no more than 2 balloons.

• You can build the car out of anything.

• It must have at least three wheels. Wheels are defined as anything that is round and goes around.

• The wheels cannot be wheels from a toy car. They must be made out of something that was not originally meant to be used as wheels.

• The car may not leave the ground.

• The car must be capable of traveling at least 5 meters.

• Car must be designed to fit in a shoe box. Example: Nike shoe box. All projects will be stored in class until all student projects have been graded. Therefore, students must properly store projects in order to receive a grade.

Project Documentation:

Final report must include the following sections: (* indicates milestone grades)

1. Title: Project title, full name, per, date

2. *Materials: Labeled Image(s)/drawing(s) of all materials used

3. *Building the car (methods): Diagram and explain details of each step in the process of building your car.

4. *Newton’s Laws Explanations: explain how each of Newton’s three laws apply to the design of the car:

-how Newton’s 1st law (law of inertia) applies to the car when it is

in motion or at rest.

-how the acceleration of the car could be increased using

Newton’s 2nd law, F=ma.

-how Newton’s 3rd law applies to the air escaping the balloon.

5. *Free Body Diagrams:

Two FBD of the force acting on the car: 1) at rest 2) in motion

6. Data and Calculations: use table format provided below

7. *Resources: List 3 web sites on balloon cars that can used as a resource in completing the project.

Race Day Procedures:

1. Use the spring scale or electronic balance to find the mass of your car. Report value in grams and kilograms.

2. Time how long it takes your car to travel 6 tiles (1.8 m) when starting from rest. Repeat this process two more times and find the average.

3. Measure the total distance your car can travel on one” tank of gas”.

*Show work for calculations in your data table-leave plenty of space- circle/box your final answers.

|Mass of car | |

|(grams and kilograms) |g |

| | |

| |kg |

| | |

|Distance traveled by car in meters (6 tiles) | |

| |1.8 m |

|Average time in seconds for balloon to travel 1.8 m |Trial 1 |

|(6 tiles) |s |

| | |

| |Trial 2 |

| |s |

| | |

| |Trial 3 |

| |s |

| | |

| |Avg time |

| | |

| | |

| |s |

| | |

|Calculate the weight of the car (in Newtons) | |

| | |

| | |

| | |

| | |

| |N |

|Calculate the average speed over 1.8 m | |

| | |

| | |

| | |

| | |

| |m/s |

|What is the longest distance your car can travel? | |

|-5m (16 tiles) for full credit | |

| |m |

Name: ______________________________________ Pd: ____

Balloon Powered Race Car Grading Rubric:

|CRITERIA |Pts possible |Pts earned |

|Car powered by no more than two 9” balloons. |5 | |

|Car has at least three wheels and does not leave the ground. |5 | |

|Data/ Calculations |15 | |

|The car capable of traveling at least 5 meters. (bonus opportunity) |20 | |

|Project documentation/ presentation |------- | |

|Free Body Diagrams and Newton’s Laws |25 | |

|(milestone check) | | |

|Materials and Methods and Citations |25 | |

|(milestone check) | | |

|final product and presentation |10 | |

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