Discussion of the Question 01/96
The question was:
What is the minimal speed with which a person can run on the surface
of the water.
R. Mints (1/96): It is easy to set an upper bound - the escape velocity
(8 km/sec)
is certainly sufficient to walk on water. Actually, it is sufficient "to walk
on air"...
Y. Kantor(1/96): It is easy to set a better bound. If I will run at the
speed of sound in the water (1500m/sec=5400km/hour) then the water will
not react (i.e. will behave as a solid). This is certainly an upper bound.
However, I think that the actual answer will be around 100km/hour - just
think about swimming "butterfly" style...
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