[填空题]
An airplane is heading due south at a speed of w e8/h/2 7aa;xpr jj:t 7cxlnrue2l1n 600l62p 6d:9 eutz,+fb3cncp abb+ay:z7fibs,r$ \mathrm{~km} / \mathrm{h} $. If a wind begins blowing from the southwest at a speed of 100 $\mathrm{~km} / \mathrm{h}$ (average), calculate:
(a) the velocity (magnitude and direction) of the plane relative to the ground, and $^{\circ} $ east of south
(b) how far from its intended position will it be after 10 min if the pilot takes no corrective action.
[Hint: First draw a diagram.]
