Question

A swimmer wishes to reach directly opposite point on the other bank of a river, flowing with velocity 4 root 2m/s. The swimmer can swim with 8 m/s in still water. The angle with the flow direction he should swim to reach the directly opposite point is
1.45 degrees
2.90 degrees
3.135 degrees
4.150 degrees

Answer 1

Answer:

135 degrees

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Answer 2

Answer:

time taken will be t= 480/6=80

Explanation:

options given is wrong

Flow path determines which path water will glide in a given cell. Based at the path of the steepest descent in every cell, we degree glide path. Also, the z-cost distinction and slope are calculated among neighboring cells.

Flow path tape is literal – it identifies the glide of fueloline or liquid in a pipe. This is essential for preserving protection in the course of maintenance, protection tests and renovations. Identifying the glide of fueloline or liquid in a pipe is a prerequisite to severa plumbing protocols.

as a way to attain without delay contrary financial institution of river he has to swim at an attitude wherein factor of his speed cancel out the glide of water in order that he can cross without delay contrary financial institution of the river.

so if we expect he's swimming at an attitude θ with the glide, we get

10Cosθ=eight

and additionally 10Sinθ might be factor in order to assist him pass the river.

so if Cosθ=0.eight then Sinθ=0.6

speed assisting in crossing the river =10×0.6=6m/s

additionally distance is given width=480m

time taken might be t= 480/6=80

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