My kid has this toy car and it doesn’t take batteries, it just takes a small push and can go really far and take a lot of obstacles. Inside there are a bunch of gears that seem to propel the car, but in terms of conservation of momentum and energy, I don’t get how it can go so well. how this works? (I do have a 5 yo but she doesn’t care as much as I do about getting a correct answer.)
In: Engineering
Is it a Darda Car? I got a few of them in France in the 80s when I was a kid. They have a tiny barrel with a spring and gearing inside.
https://en.m.wikipedia.org/wiki/Darda_(toy)
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