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the velocity of a ship in still water is 20 km/h . what is the velocity of a motor boat approaching the ship at right angles to its course if it appears to people on board ship heads towards the ship at 60 degree
The angle of the resultant with the ship comes to be 60`. If Vs is the velocity of the ship and Vb is the velocity of the boat, the tan60` = Vbsin90`÷(Vs-Vbcos90`). Since the angle between Vb & Vs is 90. On solving Vb = 20root3 = 34.64 m/s
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