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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Obviously, wind speed is a huge factor and the power needed would be 0.5 x density of air x frontal area x drag co-efficient x (relative wind speed)^2.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com