Kinematics 3 Question 5
5. A boat which has a speed of in still water crosses a river of width along the shortest possible path in . The velocity of the river water in is
(a) 1
(b) 3
(c) 4
(d)
(1988, 2M)
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Answer:
Correct Answer: 5. (b)
Solution:
- Shortest possible path comes when absolute velocity of boatman comes perpendicular to river current as shown in figure.
Solving this equation, we get