1.

13.Aboatcrossesariverin shortest possible time. The speed of the boat in still water is 13 m/s. The resultantspeed of the boat whole crossing the river is 12 m/s. What is the velocity of flow of river?a) 25 m/sb) 1 m/s C)12/13 m/s d) none

Answer»

the Pythagoreans theorem√13^2-12^2=5cmnone of these.



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