9th Class Science Sample Paper Sample Paper - 4 Term - 1

  • question_answer
      Glass and china wares are wrapped in straw or paper before packing. Briefly explain why?

    Answer:

      Glass and china wares are wrapped in straw or paper before packing. If during loading or unloading in transit, packing gets some jerk, then straw or paper, being compressible increases the time of jerk. As a result for given change inmomentum, the force of jerk will be less and chances of breakage of glass and china wares will be reduced.                                                                                                                                                              (3)


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