9th Class Science Force and laws of motion Question Bank Force and Laws of Motion

  • question_answer
    Two bodies collide at the same temperature. Which of the following is conserved?
    (i) Velocity
    (ii) Momentum
    (iii) Kinetic energy

    A)  Only (i) and (ii)

    B)  Only (ii) and (iii)  

    C)  Only (i) and (iii)

    D)  (i), (ii) and (iii)

    Correct Answer: B

    Solution :

     Law of conservation of momentum states that the momentum of the system before collision is equal to the momentum of the system after collision. The kinetic energy too is conserved.


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