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From: "Carl E. Mungan" <mungan@USNA.EDU>Yes, but only because it was rolling before it hit the icy patch, right? A wheel placed on a truly frictionless horizontal surface can't roll can it?
Consider a ball bearing rolling across a frictionless (yes, I know
there must be a minimal friction force or the thing would never
roll...) tabletop or
nitpicker's note: Consider a wheel on your car rolling along pavement
at constant speed on a flat road. Suddenly you hit an icy patch. But
you don't panic. You keep the wheel straight and you keep your feet
off the accelerator and brakes. Doesn't the wheel keep rolling
merrily along?