SOLUTION: 9. If Martin swims due north at 2mph and a current of 5mph is flowing due east, how fast does Martin swim and in what direction does he travel?

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: 9. If Martin swims due north at 2mph and a current of 5mph is flowing due east, how fast does Martin swim and in what direction does he travel?       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1017876: 9. If Martin swims due north at 2mph and a current of 5mph is flowing due east, how fast does Martin swim and in what direction does he travel?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
9. If Martin swims due north at 2mph and a current of 5mph is flowing due east, how fast does Martin swim and in what direction does he travel?
------------
It's a right triangle.
The legs are 2 & 5. The hypotenuse is his speed wrt the Earth
= sqrt%282%5E2+%2B+5%5E2%29+=+sqrt%2829%29 mi/hr
=~ 5.385 mi/hr
------
His direction (using 360 degs as North) is atan(5/2)
=~ 68.2 degs