1.

Point 'A' moves uniformly with speed V_(1)(=20 m//sec) so that vector vecv_(1) is continuously 'aimed at point B which in turn moves rectilinearly and uniformly with velocity v_(2) (=10 m//s) along the path PtoQ as shown in the figure if the time (in sec) when the points A and B converge is(3k)/(7) Then, find the value of k?

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ANSWER :4


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