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A boat is rowed across a river at the rate of 4.5km/hr.The river flows at the rate of 6km/hr. The velocity of boat in m/s is
the angle between velocity of boat and river is 90then resultant velocityof boat = = 27m/sHope it clears..................................
Speed of boat across river is 4.5kmph . So direction is towards north.Speed of river is 6kmph towards east or west.So net velocity is vector addition of both these velocity vectors√4.5^2+6^2=√42.25=7.5kmph at 37 with horizontal So by Pythagoras theorem√
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