An airplane has to fly eastward to adestination 856 km away. if wind is blowing at 18.0 m/s northwardand the air speed of the plane is 161 m/s, in what direction shoudthe plain head to reach its destination?
a. 6.42* south of east
b. 5.32* south of east
c. 11* south of east
d. 11.31* south of east

Explanation:

It is given that,

Distance between airplane and destination, d = 856 km

Speed of wind,

Speed of the airplane,

The vertical component of wind speed and speed of airplane is balanced so that the airplane moves eastward. So,

on solving above equation,  

or

(south of east)

So, the plane is at 6.42 degrees south off eat. Hence, this is the required solution.

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