A particle is moving in a straight line. At time , the distance between the particle from its starting point is given by . Its acceleration will be zero at
Step 1: Given data
Distance,
Step 2: Find time at which acceleration will be zero
Acceleration, is equal to the second derivative of the distance or the displacement.
Differentiating both the sides, we get
Again, differentiating both the sides, we get
As acceleration is zero,
Hence, option is correct.