A person rows a boat in a water with a speed of `4 ms^(-1)`. Water in the river is flowing with a speed of `2 ms^(-1)` . If the person rows the boat perpendiculat to thedirection of flow, find resultant velcity of the boat and time taken by boat to cross the river if widthe of the river is `400 m`.

A man can row a boat in still water with a velocity of 8 kmph .Water is flowing in a river with a velocity of 4 kmph . At what angle should he row the boat so as to reach the exact opposite point

A river is flowing steradily with a speed 5 km h^(-1) . A boat man can row with a speed of 10 km h^(-1) in still water. He rows his boat in river at right angles to the bank of river, If width of river is 800 m , (i) how much time the boat man will take to cross the river ? (ii) How far away from a point just opposite to the bank of river he will be reaching there ? (ii) What will be his effective speed gt

A 400 m wide river is flowing at a rate of 2.0 m s^-1 . A boat is sailing with a velocity of 10 m s^-1 with respect to the water, in a direction perpendicular to the river. (a) Find the time taken by the boat to reach the opposite bank.

A river 400 m wide is flowing at a rate of 2.0 m//s .A boat is sailing at a velovity of 10 m/s with respect to the water in a direaction perpendicular to the river . find the time taken by the boat to reach the opposite bank .