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Relative Velocity

Two men A and...

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Two men A and B are s†an ding at corners P and Q of square PQRS of side 8m. They start moving along the track with cons†an t speed 2m/s and 10 m/s respectively. The time when they meet for the first time is equal to (1) 1 s (2) 3 s (3) 6 s (4) 2 s

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