Building this car is a great engineering project that demonstrates the power of potential and kinetic energy.
Lego rubber band.
They can even be held in stretched positions for extended lengths of time without showing any signs of wear or even any noticeable hysteresis.
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Buy lego rubber bands and belts.
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Construct the gun s beam or barrel the size and strength of your rubber bands should affect the length of the gun s barrel.
They last ages without getting crusty and dying like most commonly available rubber bands.
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If you re using big rubber bands you ll want a much longer barrel than if you re using tiny.
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Lego parts and pieces.
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I have noticed that lego rubber bands along with just about everything else lego are fantastically durable.
The general principle behind most lego guns however a stretched rubber band released at its back end rarely changes.
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This rubber band powered lego car will zoom across the floor for 20 feet or more.
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This month we were invited to participate in a storybook stem challenge series.
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Build batman s vehicle with this cool lego rubber band car for a book inspired stem project.