9th Class Science Work and energy Question Bank 9th CBSE Science Work and energy

  • question_answer
      A student picks up four books from the floor, walks across the room through some distance with the books at the same height and then keeps these books at the new place. In which of these sequence of actions work is said to be performed ?  

    Answer:

                      When the student is picking up books from the floor in the beginning.  


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