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Re: Friction

John Denker wrote:

Example: A boat. The static friction between the surface of the hull and
the surface of the water is zero. At any nonzero velocity, the dynamic
friction is greater than zero.

At 10:04 AM 10/17/00 -0500, Doug Craigen wrote:

Couldn't the same be said about a block resting on flat ground?

No.

I think the question has to do with the classic diagram of frictional
force vs applied force:

/
/ ___________
/
/
/
u_s u_k

That's stated to be a force-versus-force diagram.
The original question asked about the force-versus-velocity relationship.