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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 5

  • question_answer
    Figure shows the distance-time graph of the motion of a car. It follows from the graph that the car is

    A) at rest   

    B) in uniform motion          

    C) in non-uniform motion     

    D) uniformly accelerated.   

    Correct Answer: D

    Solution :

    [d]:\[x=1.2{{t}^{2}},\] Velocity,\[v=\frac{dx}{dt}=\frac{d}{dt}(1.2{{t}^{2}})=2.4t\] Acceleration, \[a=\frac{dv}{dt}=\frac{d}{dt}(2.4t)=2.4=a\] a constant Thus the given motion is uniformly accelerated.


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