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JEE Main & Advanced Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति Question Bank Work Done by Constant Force

  • question_answer
    The same retarding force is applied to stop a train. The train stops after 80 m. If the speed is doubled, then the distance will be                             [CPMT 1984]

    A)             The same

    B)               Doubled

    C)             Halved

    D)               Four times

    Correct Answer: D

    Solution :

                    Stopping distance \[S\propto {{u}^{2}}\]. If the speed is doubled then the stopping distance will be four times.


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