A river 800 m wide flows at the rate of `5kmh^(-1)`. A swimmer who can swim at `10 kmh^(-1)` in still water, wishes to cross the river straight. (i) Along what direction must be strike ? (ii) What should be his resultant velocity ? (iii) How much time he would take ?

A river 500 m wide flows at a rate at a rate of 4 km h^(-1) . A swimmer who can swim at 8 km h^(-1) . In still water, wishes to cross the river straight. (i) Along what direction must he strike? (ii) What should be his resultant velocity. (iii) What is the time of crossing the river?

A river 800 m wide flows at the rate of 6 km h^(_1) in still water, wishes to cross the tiver straight. ltbRgt (a) Along what direction must he strike ? (b) What should be his resultant velocity ? (c ) How much time he would take ?

A river 600 m wide wide flows at the rate of 8 km h^(-1). Still water, wishes to cross the river straight (i) Along what direction must be strike ? What will be his resultant velcity ? (ii) How much time he will take to cross the river ?

A man can swim at the rate of 5 km h^-1 in still water. A 1 - km wide river flows at the rate of 3 km h^-1 The man wishes to swim across the river directly opposite to the starting point. (a) Along what direction must the man swim ? (b) What should be his resultant velocity ? ( c) How much time will he take to cross the river ?

A man can swim at the rate of 5 km//h in still water. A river 1 km wide flows at the rate of 3km h^(-1) . A swimmer wishes to cross the river straight.

A river is (1)/(2) km wide and flows at the rate of 3 kmph. A man, who can swim in still water at the rate of 5 kmph wishes to reach the other bank of the river. In what direction should he start swimmin to cross the river (a) along the shortest route, (b) in the shortest possible time ? Calculate how much time he will take to cross the river in the two cases.

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 swimmer wants to cross a 600 m wide river . If the speed of swimmer is 12 km/hr in still water and speed of river is 6km/hr , along what direction the swimmer must strike in order to cross the river straight ? Also, calculate his resultant velocity and time taken by him to do so .