Why is riding a bike at speed easier than falling off one?
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Gyroscopic force: http://www.howstuffworks.com/gyroscop...
Longest ramp jump on a mini bike: http://www.guinnessworldrecords.com/w...)
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Taken from James May's Q&A Ep 32

Welcome to BBC Earth Science! Here we answer all your curious questions about science in the world around you (and further afield too). If there's a question you have that we haven't yet answered let us know in the comments on any of our videos and it could be answered by one of our Earth Science experts.