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7th Class Science Related to Competitive Exam Question Bank Work and energy

  • question_answer
    A boy pushes a toy cart along a level road and then lets it go. As the cart is slowing down, the biggest energy change is from

    A) Heat to kinetic            

    B) Kinetic to heat

    C) Kinetic to potential      

    D) Potential to heat

    Correct Answer: B

    Solution :

        Since it is travelling on a level road, the main change of energy will be from kinetic (moving object), to heat energy (due to friction).


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