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Work And Energy — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceWork And Energy1 Mark
Question
Write an expression for the kinetic energy of an object.
✓

Answer

If a body of mass $m$ is moving with velocity v, then its kinetic energy $E_k$ is given by the expression,
$E_k=\frac{1}{2}mv^2$
Its $S.I.$ unit is Joule $(J).$

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