A battalion of soldiers is ordered to swim across a river 500 m wide . At what minimum rate should they swim perpendicular to river flow in order to avoid being washed away by the waterfall 300m downstream. The speed of current being 3 m/sec :
Text Solution
Verified by ExpertsThe correct answer is:
B
t = 
= 100 sec.
v = 
= 5 m/s
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