Calculating Velocity of Boater in Relation to Shore

[homevolend]

Homework Statement

A person is boating across a body of water with velocity 3.2 m/s[N]. Wind with a velocity 1.2m/s[N20E] starts and changes path of boater.. What is velocity of boater relative to shore?

Homework Equations

nie

The Attempt at a Solution

V1x=0
V1y=3.2

V2x=1.2cos20
V2x=1.1

V2y=-1.2sin20
V2y=-.04

Vx=0 + 1.1=1.1
Vy=3.2 - 0.4=2.8


Then doing the Vx=1.1² + 2.2² then rooting that I didnt get the right answer.

I also tried to manipulate the Vy and change it with different numbers but still got the wrong answer? What would I need to do?


Thanks.

 

[Delphi51]

V2y=-1.2sin20

The wind is N20E, so there should be no minus sign.

Poor question. We can only do it by assuming the water will move at the speed of the wind, but that isn't very likely.

 

[homevolend]

Yeah its a shame, thanks for the help Il just try with no minus sign and get the answer.\\