In the previous problem, the man wants to cross the river in the minimum time. In which directions, he should move? Find the minimum time to cross the river and his displacement (drift) along the flow.

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 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?

Crossing River In Minimum Time

A river is flowing from the west to the east at 5m/min. A swimmer on the southerm bank can swim at 10 m/min in still water. In what direction should he swim if (i) He wishes to cross the river in minimum time (ii) He wishes to cross te river through shortest route

A man can swim in still water with a speed v . River flows at a speed u which is greater than the swimming speed (v) of the man . Explain that the man cannot move perpendicular to the flow . If man swims at an angle theta with the river flow , then find drift along the flow by the time he crosses the river . Also find the minimum value of the drift along the flow x by the time he crosses the river .

A river of width 100 m is flowing with a velocity of 1.5 m/s. A man start from one end with rest relative the river. He raws with an acceleration of 2 m//s^(2) relative to the river. If the man want to cross the river in minimum time, by how much distance (in meters) will he be drifted (flown) in the direction of river flow during the crossing.