Monday, 25 August 2014

Balloon racers test Isaac Newton's Third Law of Motion

Our challenge last week was to make a balloon racer, which relied on Newton's Third Law of Motion.  As the air rushes backward out of the balloon it pushes the car forward in the opposite direction with an equal force.  Our job was to make the most of this force!

The rules of the challenge were simple:
  • Each person had to make their own balloon racer;
  • The car must have been powered by balloons;
  • You could build the car out of anything;
  • It must have had at least three wheels.  Wheels were defined as anything that was round and goes around.
  • The wheels could not be wheels from a toy car.  They must have been made out of something that was not originally meant to be used as wheels.
  • The car could not leave the ground.
  • The car must have been capable of travelling at least 5 meters.

On race day we set up a track down in the hall and raced in pairs.  Cars that followed all of the rules were eligible for awards.  
These awards were given in three categories:
Best looking car (made to plan) - People's Choice - Corey; Teacher's Choice - Liam and Daniel.
Fastest car (in first 5 meters) and farthest distance travelled - Theo

Here's some of our creations:

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