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9th Class Science Work and energy Question Bank Work Power and Energy HOTS Subjective Problems

  • question_answer
    A car and a truck are moving with same kinetic energies. If they are stopped by same retarding force, then (i) Which one will travel more distance before coming to rest? (ii) Which one will take more time to come to rest?

    Answer:

    (i) As energy E = FS, the two bodies cover equal distances before coming to rest. (ii) The time taken to come to rest is more for truck body as it has greater momentum.


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