The position of a particle moving along x axis is given by x =(-2t^3 + 3t^2 + 5) m. The acceleration of a particle at instant its velocity become zero is
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Given distance
Since we know velocity is distance over time so
Differentiating gives
The instance
This expression gives t=0 or t=1
Now acceleration is velocity by time
So when t=0 we get a=6 while when t=1
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