## Trending News

Anonymous

# A pilot’s airspeed velocity is 120 knots due west..10 POINTS!?

A pilot’s airspeed velocity is 120 knots due west. The wind is blowing 30 knots due south. What is the pilot’s groundspeed velocity (also called the pilot’s true course)? What is the pilot’s speed?

Please help! I don't get how to do it!

### 1 Answer

Relevance

- SparksLv 610 years agoFavorite Answer
It's a combination of flight speed and wind speed.

The direction of the plane and the wind make a 90° angle with one another.

Distance x:

x = √( 120² + 30²)

x = √ 14,400 + 900

x = √ 15,300

x = 123∙ 69 316...

x ≈ 123∙7 Knots

Tan Θ = 30/ 120

Θ = Tan-1 (30/120)

Θ = Tan-1 (0∙25)

Θ = 14∙036 24...

That's probably a west west south direction.

123∙7 Knots at 14∙0°

- Login to reply the answers

Still have questions? Get your answers by asking now.