Question

Where does a person find easier to swim- in a sea water or in a river water? Give reason for your answer.

Answer 1

1. The density of the seawater is more than that of the river water this is because sea water contains dissolved salts.
2. Up thrust is directly proportional to the density of the liquid.
3. As the density of seawater is more so up thrust in seawater is more.

Hence, a person finds it easier to swim in seawater.