1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Projectile motion of a sailboat

  1. Sep 22, 2009 #1
    1. The problem statement, all variables and given/known data

    A sailboat runs before the wind with a constant speed of 3.9m/s in a direction 44 north of west.
    How far west has the sailboat traveled in 23min ?
    How far north has the sailboat traveled in 23min ?
    Answer in two sigfigs

    2. Relevant equations


    3. The attempt at a solution

    3.9*1380=5382(the length of hypothesis)

    Sailboat traveled distance of WEST in 23min : 5382*cos(44)=3871.486805
    two sigfigs : 3900

    Sailboat traveled distance of NORTH in23min: 5382*sin(44)=3738.65136
    two sigfigs : 3700


    I solve like this but its wrong.
    What did I do wrong?
  2. jcsd
  3. Sep 23, 2009 #2


    User Avatar
    Science Advisor
    Homework Helper

    Welcome to PF!

    Welcome to PF! :smile:

    (it's hypotenuse! :wink: :biggrin:)
    hmm … looks ok to me :smile:

    do they want you to convert to km?
  4. Sep 26, 2009 #3
    Re: Welcome to PF!

    Thanks for reply!

    I forgot to convert that to km. :)
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook