Intext Question VI — task. Science CBSE, Class 9.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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The kinetic energy of an object of mass, m moving with a velocity of \(5\ ms^{-1}\) is \(25\ J\). What will be its kinetic energy when its velocity is doubled? What will be its kinetic energy when its velocity is increased three times?

If a body of mass \(m\) is moving with a speed \(v\), then its Kinetic Energy. \({E_k}\) is given by the expression,

\(E_k\ =\ \frac{1}{2}\ m \times v\)
\(E_k\ =\ \frac{m}{v^2}\)
\(E_k\ =\ m \times v^2\)
\(E_k\ =\ \frac{1}{2}\ m \times v^2\)

Mass of the object (\(m\)) \(=\) \(kg\)

When velocity is doubled, Kinetic energy of the object \(=\) \(J\)

When velocity is increased three times, Kinetic energy of the object \(=\) \(J\)

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33. Intext Question VI

Exercise condition: