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Pete C.

wrote:

On Thu, 13 Jan 2011 08:34:56 -0600, "Pete C."
wrote:

In the Mythbusters test their cylinder went cleanly through their test
cinderblock wall, and would have gone through the next one if there was
a little more distance for it to accelerate again after going through
the first wall.

In that same episode, Jamie was sitting in a boat in the bay when he
released the valves on two tanks pointed rearward. Boat hardly moved.
I always thought he should have positioned them below waterline for a
little more exciting ride.

Accelerating a 100# steel cylinder sliding on about a 36 square inch
contact patch on hard concrete apparently requires a lot less force than
accelerating 800# of person, boat and cylinders trying to plow water out
of the way.