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JEE Main & Advanced Physics Vectors Question Bank Addition and Subtraction of Vectors

  • question_answer
    A body moves due East with velocity 20 km/hour and then due North with velocity 15 km/hour. The resultant velocity                                                 [AFMC 1995]

    A)                 5 km/hour

    B)                             15 km/hour

    C)                 20 km/hour

    D)                             25 km/hour

    Correct Answer: D

    Solution :

                        Resultant velocity\[\text{ }=\text{ }\sqrt{\text{2}{{\text{0}}^{\text{2}}}+{{15}^{2}}}\] = \[\sqrt{400+225}=\sqrt{625}=25\ km/hr\]


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