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Olympiad-Science
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Class 9
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Q)
The kinetic energy of a ball of mass 1kg moving at a speed of 20 cm/s is
$\begin{array}{1 1} (a)\; 100 J \\ (b)\; 200 J \\(c)\; 2000 J \\ (d)\; 1000 J \end{array}$
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