A man can row a boat with 4km/h in still water, if he is crossing a river where the current is 2 km/h.
(a) In what direction will his boat be holded, if he wants to reach a point on the other bank, directly opposite to starting point?
(b) If width of the river 4km, how long will the man take to cross the river, with the condition in part (a)?
(c) In what direction shou ld he heat the boat if he wants to cross the river in shorest time and what is this minimum time?
(d) How long will it take him to row 2 km up the stream and then back to his starting point?

A boat man can rown with a speed of 10 km h^(-1) in still water. If the river flows steadily at 5 km //h , in which direction showld the boatman row in order to reach a point on the other bank directly opposite to the point from wher he stared ? The width of the river is 2km .

A boat man can row with a speed of 10 km h^(-1) in still water. If the river flows steadily at 5 km //h , in which direction should the boatman row in order to reach a point on the other bank directly opposite to the point from where he stared ? The width of the river is 2 km .

47.A man can row a boat with 4kmph in still water.If he is crossing a river where the current is 8kmph .The time take to cross the river in shortest path is (k)/(sqrt(3))hr .Where k ' is (width of the river is 8km )

A man can row a boat at 4.0km/hr in still water. A river flows at 2.0km/hr. (a) if he is crossing the river, in what direction the oat shou ld go to reach a point directly opposite to his staring point? (b) if the river is 4.0km wide how long will it take him to cross the river? (c) How long will it take him to row 2.0km down the river and then back to his starting point? (d) How long will it take him to row 2.0 km up the river and then back to his starting point? (e) in what direction the boat shou ld go, if he wants to cross he river in teh smallest possible time?

A man can row a boat with 8 kmph in still water.If he is crossing a river of width 8km where the current is 4kmph , then the time taken to cross the river in shortest time is (k/sqrt(3)) hr.The value of 'k' is?