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

  • question_answer
    A body does 20J of work in 5s. What is its power?

    Answer:

    \[W=20\,J\] \[t=5s\] \[P=?\] \[P=\frac{w}{t}=\frac{20}{5}=4\,w\]


You need to login to perform this action.
You will be redirected in 3 sec spinner