NEET 2000 Physics question
The width of river is 1 km. The velocity of boat is 5 km/hr. The boat covered the width of river with shortest possible path in 15 min. Then the velocity of river stream is :
Answer: (1)
Solution
The shortest path means the boat travels straight across (perpendicular to the banks), so the boat must head upstream at an angle such that the river's drift is cancelled. Resultant speed across the river: \frac${1\
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