9th Class Science Force and laws of motion Question Bank

done Force And Laws Of Motion Summtive Objective Problems Total Questions - 6

• question_answer1)
  While dusting a carpet we suddenly jerk or beat it with a stick because
  A)
   Inertia of rest keeps the dust in its position and the dust is removed by moment of the carpet away done clear
  B)
   Inertia of motion removes the dirt. done clear
  C)
   No inertia is involved in it due to practical experience done clear
  D)
   None of these done clear
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• question_answer2)
  Newton's first law of motion is also called the
  A)
   Law of density                  done clear
  B)
   Law of mass done clear
  C)
   Law of inertia                    done clear
  D)
   Law of speed done clear
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• question_answer3)
  A cyclist does not come to rest immediately after he stops pedaling due to the
  A)
   Inertia of rest                   done clear
  B)
   Inertia of motion done clear
  C)
   Inertia of direction         done clear
  D)
   None of the above done clear
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• question_answer4)
  Which of the following is the unit of linear momentum?
  A)
   kg m/s                                 done clear
  B)
   kg ms done clear
  C)
   \[\text{kg}\,\text{m}{{\text{s}}^{-\text{2}}}\]                  done clear
  D)
   kg done clear
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• question_answer5)
  While flying, the birds push the air
  A)
   Upward                               done clear
  B)
   Downward done clear
  C)
   Sideward            done clear
  D)
   Backward done clear
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• question_answer6)
  If the weight of a person on the surface of the earth is 600N, then his weight on the surface the moon is.
  A)
   600 N                                    done clear
  B)
   50 N done clear
  C)
   100 N                    done clear
  D)
   Zero done clear
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