# Relative Velocity Help Needed

1. Oct 12, 2008

### Faint

1. The problem statement, all variables and given/known data
An airplane is heading due south at a speed of 620 km/h. If a wind begins blowing from the southwest at a speed of 80 km/h (average), calculate the following.

(a) the velocity (magnitude and direction) of the plane relative to the ground
(566.27) km/h (5.733)° (east of south)--- I got this one

(b) how far from its intended position will it be after 10 min if the pilot takes no corrective action. [Hint: First draw a diagram.]

2. Relevant equations
a2+b2 = c2

3. The attempt at a solution
I have gotten the answers to part A, but I am struggling on how to set up part B. I have tried doing (600/60)*10 to get 100 km/10 min, then subtracting it by the actual amount traveled. So what I have done is basically ((600/60)*10)-((566.27/60)*10)=94.378, but this is wrong.

Please help.

2. Oct 12, 2008

### Faint

I solved this. It is ((80/60) * 10) = 13.3333. This is the amount the wind throws the plane off.

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