9th Class Science Work and energy Question Bank Work Power and Energy Formative Subjective Problems

  • question_answer
    Calculate the kinetic energy of a body of mass 2 kg moving with a velocity of 0.1 m/s.

    Answer:

    \[m=2\,kg\] \[V=0.1\,\,m/s=1\times {{10}^{-1}}m/s\] \[KE=?\] \[KE=\frac{1}{2}m{{v}^{2}}=\frac{1}{2}\times 2\times {{(1\times {{10}^{-1}})}^{2}}\]                                 \[={{10}^{-2}}J\]


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