Determine magnitude of change in velocity and direction

[Lee Kah Mun]

Homework Statement

A sailing boat moves at 12ms-1 due North then changing direction to north-west and traveling at a speed of 5.5ms-1 . Determine the magnitude of change in velocity n its direction.

Homework Equations

The Attempt at a Solution

 

[William White]

is this a trick question?

magnitude of velocity is just speed, so has nothing to do with direction.

 

[jbriggs444]

is this a trick question?

magnitude of velocity is just speed, so has nothing to do with direction.

No. It is not a trick question. Direction has something to do with it. However, the OP has not shown any work, so we should resist the urge to provide advice until he or she has shown some effort and thereby given us a starting point.