7th Class Science Related to Competitive Exam Question Bank Work and energy

  • question_answer
    A man holding a suitcase of mass 15 kg and was waiting for a bus from past 15 minutes. Then the work done is

    A) Positive                       

    B) Negative

    C) Zero               

    D) 15joule

    Correct Answer: C

    Solution :

        As \[W=F\times d\] Here, displacement \[d=0\therefore w=0\]    


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