Reference Frame Question: How come wind relative to boat doesn't matter?

[yougene]

Homework Statement

http://img198.imageshack.us/img198/3834/relativeboatvelocity.jpg


The note says "( Wind relative to boat is irrelevant! )"

Why is it irrelevant?

 

[mgb_phys]

Suppose it's a motor boat?
It could be that another version of the question also asks something about the wind.

 

[yougene]

Bah. If physics is a language of precision why go out of the way to play semantic games in word problems?

No such problem, but you're right this problem doesn't involve any sort of "forces".