• Subject:

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• Topic:

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The position x of a particle varies with time t as $x=a{t}^{2}-b{t}^{3}$. The acceleration of the particle will be zero at time t equal to

(1) $\frac{a}{b}$

(2) $\frac{2a}{3b}$

(3) $\frac{a}{3b}$

(4) Zero

PMT