What is the average time of a pinewood derby car?

That will vary depending on the track, the skill of the builders, and the rules used. Some packs allow outside wheels and axles etc and some "just what is in the box".At my son's pack, using a fairly typical track and rules, the times are usually between 2 and 3 seconds.

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How much do birch bark canoes weigh?

It can weigh basically, or roughly, 40 lbs. to 75 lbs. It all depends on the size of the canoe.

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How do you build a bench?

Need to know if it is a park bench or a work bench but either way your local book store or library has many books on that subject that will help you build one step by step.

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How do you stack 6 nails that are the same size on top of one nail that is hammered into a piece of wood?

we did this i my science class . you have to balance the nails and make sure they fit.

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What makes an accelerator stick in a car?

Carbon build up in the throttle body.

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