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

  • question_answer
    A metal ball falls from a height of 32 metre on a steel plate. If the coefficient of restitution is 0.5, to what height will the ball rise after second bounce                                              [EAMCET 1994]

    A)          2 m                               

    B)          4 m

    C)          8 m                               

    D)          16 m

    Correct Answer: A

    Solution :

             \[{{h}_{n}}=h{{e}^{2n}}\]= \[32{{\left( \frac{1}{2} \right)}^{4}}=\frac{32}{16}=2m\]        (here n = 2, e = 1/2)


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