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    Question

    What is the work done if a force of 15 N moves a body by

    3 meters in the direction of force?  
    A 30 J Correct Answer Incorrect Answer
    B 45 J Correct Answer Incorrect Answer
    C 15 J Correct Answer Incorrect Answer
    D 5 J Correct Answer Incorrect Answer

    Solution

    Work = Force × Displacement   Here, W = 15 × 3 = 45 J  Since the motion is in the direction of the force, all force contributes to work.   Joule (J) is the SI unit of work.

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