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     EduGorilla 
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    The position of a particle travelling along x – axis is given by xt =  t3 – 9  t2+ 6t where xt is in m and t is in second . Then 

    1) the particle does not come to rest at all.

    2) the particle comes to rest firstly at (3 – √7 ) s and then at (3 +  √7) s

    3) the speed of the particle at t= 2s is  18 ms−1

    4) the acceleration of the particle at t= 2s is 6 ms−2

    Options :-

    1. 2,3, 4 are correct

    2. 2,3 are correct

    3. All of them are correct

    4. 1 and 2 are correct

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