Re: Work done by Friction

[William Beaty <billb@eskimo.com>]

On Tue, 21 Jul 1998, Tim Burgess wrote:

> 	Textbooks that we use commonly refer to the "work done by friction"
> in  slowing the speed of objects.  There are some who think this approach
> is flawed.  Others indicate that the right answer is commonly obtained
> by treating such friction as work.


We agree that work is done in speeding up an object.

It's wrong to say that work is done in slowing that object down?

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