please help!!

A plane is seen to travel in a direction [S 30 degrees W]. if its ground velocity was 300 km/h and the wind speed is 150 km/h south, what is the plane's velocity relative to the air?

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- March 4th 2008, 05:14 PMcheckmarksrelative velocity (physics question)
please help!!

A plane is seen to travel in a direction [S 30 degrees W]. if its ground velocity was 300 km/h and the wind speed is 150 km/h south, what is the plane's velocity relative to the air? - March 5th 2008, 05:02 AMsandstorm
Hello,

I can give you a hint:

The plane is flying 300km/h 30deg west of south. It's vertical component (in the southern direction) of its ground velocity is thus 300cos(30).

Let me know if you are still struggling. - March 5th 2008, 07:16 AMJaneBennet
You have .

The wind velocity is .

Now use the equation and solve for .