Meridian ground speed

The plane flies south at an average speed of 190 km/h, and the wind blows from west to east at a speed of 20 m/s. How fast and in what direction (relative to the meridian) will the plane move relative to the ground?

Correct answer:

v =  203.1846 km/h

Step-by-step explanation:

v1=190 km/h v2=20 m/s km/h=20 3.6  km/h=72 km/h  v1  v2 S+E => SE v=v12+v22=1902+722=2 10321=203.1846 km/h

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