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rohan kaushik Grade: 11
        

A man who can swim at the rate of 2km/hr, crosses a river to an exactly opposite point on the other bank by swimming in a direction of 120 degree to the flow of the water in the river. The velocity of the water current in km/hr is __ ??

5 years ago

Answers : (1)

shivang belwariar
35 Points
										

ook

he can swim will always mean velocity of man relative to river .

Vmr = Vm - Vr

 

taking components -

Vmrcos120 = Vmcos90 - Vrcos0

 

2*(-1/2) = -Vr

 

SO , Vr = 1 km/hr

 

plz like my answer

5 years ago
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