Posted by **CLaire** on Wednesday, December 14, 2011 at 7:37pm.

The velocity of an airplane with respect to the ground is 200 m/s at an angle of 30 degrees NORTH of EAST. The velocity of the airplane with respect to the air is 150 m/s at an angle of 60 degrees NORTH of EAST. What is the velocity of the air with respect to the ground?

- physics -
**drwls**, Wednesday, December 14, 2011 at 7:49pm
Wind speed vector + Air speed vector = Ground speed vector

Perform the vector subtraction.

Wind speed = Ground speed - Air speed

North component of wind speed

= 200 sin30 -150 sin60 = ?

East component of wind speed

= 200 cos30 -150 cos60 = ?

- physics -
**CLaire**, Wednesday, December 14, 2011 at 8:18pm
yep and then you do the sqrt( -29.9^2 +98.2^2) to get the velocity

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