9th Class Science Work and energy Question Bank

done Work Power and Energy IIT JEE Subjective Problems Total Questions - 3

• question_answer1)
  The work done in holding 15 kg suitcase while waiting for a bus for 15 minutes is (a) 225 J                                (b) 13500 J (c) 1500 J                              (d) Zero
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• question_answer2)
  A body of mass 6 kg is under a force which causes displacement in it given by\[S=\frac{{{t}^{2}}}{4}m\]where 't' is time. The work done by the force in 2 s is (a) 12 J                                  (b) 9 J (c) 6 J                                     (d) 3 J
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• question_answer3)
  If a force F is applied on a body and it moves with a velocity V, the power will be (a) \[F\times v\]                               (b) \[F/v\]  (c) \[F/{{v}^{2}}\]                             (d) \[F\times {{v}^{2}}\]
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