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    Question

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

    is its kinetic energy?┬а┬а
    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┬а = 1/2├Ч2├Ч32=9J┬а ┬а Kinetic energy depends on both mass and square of velocity.┬а┬а It is a scalar quantity.┬а┬а Unit is Joule (J).

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