Does anyone know how to correct the speed?Īlso, it seems it should be attributed to British Pathe, rather than "unknown". However, the original (at ) seems to take about 3.3 s, so the rest may be their error in splicing between the two cameras. My guess is that his fall would have taken 4 - 5 s. Since he was wearing baggy clothes and stretched out his arms, air resistance would have slowed him markedly by the end - otherwise we could all cycle at 75 mile/hr, and tennis balls could be hit as far as cricket (or baseball) balls! Also, he hardly appears to accelerate at all during the last second. From a standing start at 57 m, that would imply about 2.5 g downward acceleration, hitting the ground at 54 m/s (194 km/hr, 120 mile/hr), not just a failed parachute, but an impressive downward push 2.5 times as powerful as gravity! With gravity alone, and no air resistance, it should take about 3.4 s, hitting the ground at 33 m/s (120 km/hr, 75 mile/hr). There is something wrong with the speed of the video (Reichelt.ogv), both here and on the Eiffel Tower page, which shows him to only take approx 2.1 s from jump to landing.
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