Pros & Cons:
Pros-
- Balloon (Both kinetic and potential energy)
- Will steer in straight path (straw lets air out of balloon)
- Easy to make
- Simple
- Household object are used
Cons-
- May roll unevenly (thread rolls)
- The force being used can easily not work (balloon placement, size, air blown, etc.)
- Straw has to the proper size
- May steer out of 2 tile range (thread rolls may not go straight)
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