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JEE Main & Advanced Physics Motion in a Straight Line / सरल रेखा में गति Question Bank Numerical Value Type Questions - Motion in a Plane

  • question_answer
    The position vector of a particle changes with time according to the relation \[\vec{r}\left( t \right)=15{{t}^{2}}\hat{i}+\left( 4-20{{t}^{2}} \right)\hat{j}.\] What is the magnitude of the acceleration (in \[m/{{s}^{2}}\]) at t =1?

    Answer:

    25


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