Physics, asked by hitesh1234gupta, 10 months ago

A swimmer makes his strokes perpendicular to the flow of river at speed 8 metre per second relative to still water. he arrives at a point 20 metre downstream from the point directly across the river which is 40 metre wide. the velocity of the swimmer with respect to ground will be

Answers

Answered by Fatimakincsem
0

The velocity of the swimmer with respect to ground is Vm = 4 √ 5 m/s.

Explanation:

Speed of swimmer = 8 m/s

VR = Horizontal component of velocity ( Velocity of swimmer with respect to ground)

Vm = slope of the velocity

t = 40 / 8 = 5 m/s

VR = 0 / 5 = 4 m/s

V(m) = vmR + vR

|V(m)|^2  =  (8)^2 + (4)^2

|V(m)|^2 = 64 + 16

|V(m)|^2 = 80

Taking square root on both sides.

Vm = 4 √ 5 m/s

Hence the velocity of the swimmer with respect to ground is Vm = 4 √ 5 m/s.

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