TS EAMCET · Physics · Motion In One Dimension
A river has a steady speed of . A man swims upstream at a distance of and swims back to the starting point in total time . The man can swim at a speed of in still water. If the time taken by the man in still water is to complete the same length of swim, then is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(D)
Step-by-step Solution
Detailed explanation
The total distance travelled by the man will be 2d. Therefore, the time taken by the man in still water will be, t0=2d2v=dv When the man is going downstream its speed will be equal to v1=vm+vr=3v Therefore, the time taken to go the distance d will be, t1=dv1=d3v When the man is…
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