Q. 185.0( 1 Vote )

# A swimmer crosses

Velocity of river = 5 ms–1

Width of river = 60 m

Let the flow of river be along x-axis

Then, given that the swimmer crossed at an angle 45° time taken by the swimmer is 6 s.

Now,

Now, displacement is given by:

Also, the time taken is 6 s

So, the velocity with respect to a stationary observer

Now, the river has the velocity in x-direction =

So, the relative velocity of a swimmer with respect to the river

Now, the magnitude of the velocity =

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