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    5. A body of mass 2 kg is moving with velocity 3 m/s. What is its kinetic energy?  

    Question

    A body of mass 2 kg is moving with velocity 3 m/s. What

    is its kinetic energy?  
    A 6 J Correct Answer Incorrect Answer
    B 9 J Correct Answer Incorrect Answer
    C 12 J Correct Answer Incorrect Answer
    D 18 J Correct Answer Incorrect Answer

    Solution

    KE = 1/2mv2  = 1/2×2×32=9J    Kinetic energy depends on both mass and square of velocity.   It is a scalar quantity.   Unit is Joule (J).

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