
Math General Math Forum  For general math related discussion and news 
 LinkBack  Thread Tools  Display Modes 
January 15th, 2017, 08:54 AM  #1 
Newbie Joined: Jan 2017 From: Warrington Posts: 2 Thanks: 0  Ship problem
Hi, complete new comer to this forum and not quite sure this is the right place to ask a new question? Here goes anyway: If a ship steams southeast at 20 knots across a current flowing towards 060° at 2 knots, what is its position relative to its starting position after 1 hour? I'm assuming it's going to be easiest to solve with a vector diagram, I'm just not quite sure how you'd draw it. Thanks in advance. 
January 15th, 2017, 09:25 AM  #2 
Math Team Joined: Jul 2011 From: Texas Posts: 2,656 Thanks: 1327 
Relative to the +xaxis, SE is (45 degrees) and direction 060 is (30 degrees) ship's path relative to the water + current = ship's path relative to the Earth $\vec{S} + \color{blue}{\vec{C}} = \color{red}{\vec{E}}$ you can solve this using the Law of Cosines/Sines, or you can solve it using the method of vector components. sketch attached ... 

Tags 
math, problem, ship 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
finding the relation ship between x and y  akur  Algebra  8  April 1st, 2011 03:26 PM 
Sine Law: Ship Question  millerst  Trigonometry  4  April 3rd, 2008 10:39 AM 
Ship Distance From Shore  symmetry  Algebra  2  July 26th, 2007 01:57 PM 