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Slingshot Cart

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Slingshot Cart


Children build a cart powered by a rubber band slingshot. Pulling and releasing the band sets the cart in motion—demonstrating stored energy and force in action with added fun.



Materials :
  • Card Board
  • Masking Tape
  • Bottle Cap
  • Straw
  • Sausage Stick
  • Scissor
  • Paper Cup
  • Pebbles
  • Rubber
  • Double Side Tape (Thick)

Challenges:


  1. Design your own car with more or fewer wheels. You can try one with 3 wheels, 4 wheels, or even more. Add some weight to your car and see how kids work to hold the weight in it.
  2. Try using more or fewer rubber bands and see how it affects the speed.
  3. Let the kids estimate how far the cart will travel, and then you can use a measuring tape.
  4. Make an obstacle or block its way using paper cup towers or loops and see if the cart can pass through it.
  5. You can create a path that runs upward to a certain height using cardboards and see if the cart could travel across it.

Questions to be asked:


  1. Why do you think the car goes fast?
  2. What happens if we use a bigger/more number of rubber bands?
  3. Do you think adding or removing wheels of this cart brings any changes to the cart?
  4. How far do you think your car will go if you pull the rubber band really far?
  5. What kind of track would you want for your car to race on?
  6. Why not a curved path? And if you had a curved path, how would you make your car work?

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