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

  • question_answer
    A ball of mass 1 kg thrown upwards, reaches a maximum height of 5 m. Calculate the work done by the force of gravity during this vertical displacement.

    Answer:

    Given,   \[m=1\,\,kgh=5m\]                 \[W=?g=9.8\,\,m/{{s}^{2}}\] We know, \[W=mgh\] \[\Rightarrow W=1\times 9.8\times 5=49\,\,J\]


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