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  5. Time and Motion

9th Class Science Time and Motion Question Bank Motion IIT JEE Objective Problems

  • question_answer
    A motorist travels from A to B at a speed of 40 kmph and returns back at a speed of 60 kmph. H is average speed will be

    A)  40 kmph                             

    B)  48 kmph

    C)  50 kmph                             

    D)  60 kmph

    Correct Answer: B

    Solution :

    \[V=\frac{2\times 40\times 60}{60+40}=48\,kmph\]


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