adding vector problem need help!!!!!!

a Cruise ship is travelling at 8km/h north relative to the water, a boy on boat is throwing ball. find the resultant velocity of the ball relative to the water if he throws the all 25km/h SE.

My teacher says the answer is 28 m/s. Using cosine law i get approximately 20m/s. Who is right and how.

http://ift.tt/1hOar2b

Leave a comment

Your email address will not be published.


*


Show Buttons
Hide Buttons