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Why is it easier to swim in sea water th...

Why is it easier to swim in sea water than in fresh water?

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The density of sea water (salt dissolved in water)is greater than that of the river water. Therefor, upthrust on the swimmer is greater in sea water than in river water. Hence, it is easier to swim in sea water than in river water.
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RESONANCE ENGLISH-FLUID MECHANICS-Board Level Exercise
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  10. What is one bar of pressure ?

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  11. What are the factors, which effect the atmospheric pressure at a place...

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  13. State the principle of floatation.

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  16. A ship made of iron can float in water but an iron needle sinks. Why ?

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  17. Why is it easier to swim in sea water than in fresh water?

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  18. Straws are used to take soft drinks. Why ?

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