Tuesday

Building a Drink Can Dragster


Materials:
  • 1 Empty Pop Can
  • 1 paper Clip
  • 1 Plastic Bead
  • 1 Elastic band
  • 1-2 BBQ Skewer(s)
  • 1 Cardboard Circle to fit inside can rim
  • 1 Long Wire Hook
  • Hammer and Nail
Procedure:
  1. Make a hole in the centre of the bottom of the can using a hammer and nail.
  2. Straighten out the paper clip to make a hook.
  3. Punch a hole in the centre of the cardboard circle.  Put the paper clip hook through the cardboard circle and plastic bead.
  4. Wrap the straight end of the wire around one of the BBQ skewers.
  5. Use the long wire hook to pull the elastic band through the can.
  6. Secure the end of the elastic with a short piece of wooden skewer to complete the assembly.

Experiment:
Try out your Dragster to see if you can get it to travel across the floor.  Once everyone has their dragster running, we will set up a race between teams.
Questions:

How will we make this a fair race?

After the first race, what is one variable (a "feature" of our dragster) that we can change?

How many revolutions will it take to travel 1 meter?
Distance divided by Circumference (the size of the circle of our can.)

How fast is your dragster?
  Distance divided by time = Speed
Does the distance covered vary with the number of winds?  Represent your results on a graph.

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