Question

A particle is moving in a straight line such that its distance at any time \(t\) is given by \[ s=\frac{t^4}{4}-2t^3+4t^2+7, \] then its acceleration is minimum at \[ t=\_ \]

• A. 1
• B. 2
• C. 1/2
• D. 3/2

Hint:

Acceleration is minimum when its rate of change (jerk) is zero.

Answer 1

The Correct Option is B