Quote:
Originally Posted by Octane
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For a start, 45 cubic m of helium doesn't even have half the buoyancy required to get a grown man off the ground. Secondly, the ascent rate quoted translates to 90km/h in a vertical direction. (wind resistance?)
I suspect if you jumped off a building with that number of balloons you might actually reach 90km/h (albeit in a downwards direction)
~c