Why is it easier to swim in a sea than a river?

Sea water is still while river water is running.

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Salinity of sea water is more than that of river water.

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Density of sea water is more than that of river water.

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None of these.

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Solution

The correct option is C Density of sea water is more than that of river water.
sea water is denser than river water So for same volume $(v)$ of water displaced the upward ( upthrust ie buoyance force)
force will be more for sea water.
up thrust $f = p v g$
more $p$ more upward force.

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Similar questions

Q. Why is it easier to swim in sea water than in river water?

Q. Give reasons as to why It is easier to swim in sea water than in river water.

It is easier for a person to swim in sea water than in river water. The reason is that:

Q. Pressure at a certain depth in river water is

p_{1}

and at the same depth in sea water is

p_{2}

. Then (Density of sea water is greater than that of river water):

A man first swims in sea water and then in river water. (i) Compare the weights of sea water and river water displaced by him. (ii) Where does he find it easier to swim and why?

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Why is it easier to swim in a sea than a river?

The correct option is C Density of sea water is more than that of river water.sea water is denser than river water So for same volume (v) of water displaced the upward ( upthrust ie buoyance force)force will be more for sea water.up thrust f=pvgmore p more upward force.

The correct option is C Density of sea water is more than that of river water.
sea water is denser than river water So for same volume $(v)$ of water displaced the upward ( upthrust ie buoyance force)
force will be more for sea water.
up thrust $f = p v g$
more $p$ more upward force.