a man swims in a pool of width 300m . he covers 600m in 10 min by swimming from one end to other and back along the same path. find the average speed and average velocity of the man for the entire journey.
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Velocity of man =25 m/min when no stream and 20 m/min when there is water flow of speed x m/min.
Hence, 25square −x square
=20square
∴x=15 m/min=0.25 m/s
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