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  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2004

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

    A)  80 m            

    B)  40 m

    C)  60 m            

    D)  20 m

    Correct Answer: A

    Solution :

     After the collision, energy of ball \[=100\text{ }mg-20\text{ }mg\] \[=80\text{ }mg\] Therefore, the ball will go up to a height of 80 m by this energy.


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