Multiple choice question XLV — task. Science CBSE, Class 9.

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A tv tower is

$40\ m$ high. A mass of

$5\ kg$ is dropped from its top. Calculate the potential energy at the top and kinetic energy just before it hits the ground (

$g\ =\ 10\ ms^{-2}$ )

$1000\ J\ and\ 1000\ J$
$2000\ J\ and\ 2000\ J$
$3000\ J\ and\ 1000\ J$
$4000\ J\ and\ 2000\ J$

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