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JEE Main & Advanced Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति Question Bank Elastic and Inelastic Collision

  • question_answer
    An inelastic ball is dropped from a height of 100 m. Due to earth, 20% of its energy is lost. To what height the ball will rise                                        [RPMT 1996]

    A)          80 m

    B)          40 m

    C)          60 m                             

    D)          20 m

    Correct Answer: A

    Solution :

                                            \[mgh=\frac{80}{100}\times mg\times 100\] Þ \[h=80\,m\]


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