boat cross river

Feb 3rd, 2012
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The document discusses in details the problem below: A woman who can row a boat at 6.40 km/h in still water.(a) If she is crossing a river where the current is 3.20 km/h, in what direction must her boat be headed if she wants to reach a point directly opposite her starting point?(b) If the river is 6.40 km wide, how long will she take to cross the river? (c)Suppose that instead of crossing the river she rows 3.20 km down the river and then back to her starting point?(e) In what direction should she head the boat if she wants to cross in the shortest possible time, and what is that time?

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A woman who can row a boat at 6.40 km/h in still water.(a) If she is crossing a river where the current is 3.20 km/h, in what direction must her boat be headed if she wants to reach a point directly opposite her starting point?(b) If the river is 6.40 km wide, how long will she take to cross the riv

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