The North American X-15 rocket-powered aircraft is the world's fastest manned plane on record. It travels about 7 x 10^3 kilometers per hour. The duck hawk is the fastest bird, traveling at speeds over 3 x 10^2 kilometers per hours. About how much faster is the plane?
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The North American X-15 rocket-powered aircraft is the world's fastest manned plane on record. It travels about 7 x 10^3 kilometers per hour. The duck hawk is the fastest bird, traveling at speeds over 3 x 10^2 kilometers per hours. About how much faster is the plane?
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