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Two ships A and B are 10 km apart on a l...

Two ships A and B are 10 km apart on a line running South to North. Ship A father North is streaming West at `20 kmh^(-1)` and as ship B is streaming North at `20 kmh^(-1)` . What id their distance of closest approach and how long do they take to reach it ?

A

`5sqrt(2)km`, 15 min

B

`5sqrt(2) km`, 1.5 min

C

`5sqrt(2)km`, 0.5 min

D

`5sqrt(2)km`, 15 sec

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The correct Answer is:
A
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