What is the resultant speed and resultant angle of the boat?

[physicsgurl12]

Homework Statement

A rowboat starts across river. If the average speed of the boat is 5.39 m/s and the river is flowing at a speed of 2.91 m/s, what is the resultant speed and resultant angle of the boat?

i know this is super basic but i havn't done this type of problem since the beginning of the year.

Homework Equations

v=d/t

The Attempt at a Solution

vi=o m/s
0m/s=d/2.91m/s
d=0m

 

[Clever-Name]

Instead of trying to do this purely with equations set up a picture of what's going on. Lay out the respective velocities as vectors and see if you can work from there.

 

[WatermelonPig]

Is the boat trying to go straight across or is it just going to go straight in reference to the water?

 

[physicsgurl12]

Instead of trying to do this purely with equations set up a picture of what's going on. Lay out the respective velocities as vectors and see if you can work from there.

so i drew a picture but I am not really getting what you mean by laying out the respective velocities as vectors

 

[Clever-Name]

Are you familiar with free body diagrams (while usually taught using forces you can apply the same principle to velocity vectors)? Here is my interpretation of the question as a picture:

 

[mburt]

These thing usually work out to Pythagorean triangles. Think of it that way and see if you can get an answer

 

[physicsgurl12]

These thing usually work out to Pythagorean triangles. Think of it that way and see if you can get an answer

thanks for the help. i got it right! :)