Solve 2D Motion Homework: Wind Gust Accelerates Boat East

[Squall]

Homework Statement

A sailboat is traveling east at 5.0m/s. A sudden gust of wind gives the boat an acceleration a =(0.80m/s^2) (40 north of east).

Homework Equations

What is the boat's speed 6\;s later when the gust subsides?

I know the answer is 9.21m/s, but I am having difficulty breaking down the acceleration into its components. How would you start this problem and do I need to find Ax and Ay or am i going about this the wrong way.

The Attempt at a Solution

So far I have
Vx0= 5m/s
Vy0= 0m/s
t=6s
Ax=?
Ay=?
and Think the equation I need to use is Vx= Vx0+Axt then do the same for Y
and combine the two .

 

[Squall]

Okay I figure it out i was doing it right but when it cam e to combining the two components i was just adding them instead of finding the magnitude for velocity. Which involve taking the sqaure root of the squares of the components.