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`        a man with some passenger in a Boat starts perpendicular to the flow of river 200 m wide and flowing with 2 metre per second boat speed in still water is 4 metre per second when he reaches half the width of the river the passengers asked him they want to reach the just opposite end from where they have started find how many times more total time it would take that if he would have denied the passengers`
4 months ago

Vikas TU
9484 Points
```							Hiii Time to cover half of width = 100/4 = 25 secshift in direction of flow = 2* 25 = 50 m OB = sqrt(100^2 + 50^2)Time to cover it = 50sqrt 2 / (6/sqrt 5 ) = 41.66Total time = 25 + 41.66 = 66.66so, it will take 66.67 /50  more time
```
4 months ago
Khimraj
3008 Points
```							its a simple sum from dc pandeyinitially the vel is perpendicular to the flow so the toal drift is 2*t where t is the time obvousy t is 100/4=25s thereofre =50mnow it has to move in a direction so that the drift becomes 50m in the opp directionlet the anfle be @ with the perpendicular so vel along the horizontal direction is 4sin@ and along the normal 4cos@time taken to reach the other end is 25/cos@ (simple math)now drift will be 4sin@-2*25/cos@=50m
```
4 months ago
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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions