1.

A body of mass m dropped from a height above the surface of the earth the speed at which the body hits the earth surface is

Answer» \bold{Hey \: mate \: here \: is \:your \: ANSWER}

The SPEED at which it FALLS on earth is independent of it's mass but depends upon the height from which it falls. Since it is initially at rest so using third equation of motion it's final velocity will be
v \: = \sqrt{2gs}
where s is the height from which it falls and G is acceleration DUE to GRAVITY.

\large{\red{\boxed{\mathbb{HOPE \:IT \:HELPS}}}}

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