Question

A river 500m wide flows at a rate of 4km/h. A swimmer who can swim at 8km/h in still water, wishes to cross the river straight.
(i) Along what direction must be strike?
(ii) what should be his resultant velocity?
(iii) what is the time taken for crossing the river?
pls explain the answer with a reference diagram!
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Answer 1

Answer:

In still water, wishes to cross the river straight . (i) Along what direection must he strike? (ii) What should be his resultant velocity . (ii) ...