Question

10. River is flowing 20m/s toward east. To cross the river
through shortest path swimmer will swim at an angle 143°
with the river flow direction. The width of river is 60m.
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Then find out time to cross the river by the swimmer -
(1) 2 sec.
(2) 4 sec.
(3) 8 sec.
(4) Data not sufficient
11. In the above question, find out swimmer speed -
(1) 15 m/s
(2) 25 m/s
(3) 20 m/s
(4) None of these
12. In the​

Answer 1

Answer:

in the none of these out of swimmers speed

Answer 2

Explanation:

option 2 is correct

hence the time required is 2 sec