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  3. 9th Class
  4. Science
  5. Gravitation and Floatation

9th Class Science Gravitation and Floatation Question Bank Gravitation

  • question_answer
    A ball is dropped from the top of a building which takes 10 s to reach the ground. What is the height of the building?

    A) 420 m              

    B) 400 m

    C) 78.4 m 

    D)        490 m

    E) None of these

    Correct Answer: D

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