A man sitting inside a boat rowing it at a speed of 2m/s and water is flowing at a speed of 4m/s . if the man row it perpendicular to the direction of flow . find the resultant velocity of boat and time taken by boat to cross river. The width of river is 400
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Answer:
Given : Velocity of boat, V
b
=5m/s and Velocity of river water V
w
=3m/s Width of river, d=20m
Time taken by the boat to reach the opposite bank t=
V
b
d
⟹ t=
5
20
=4 s
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