ISRO Scientist Mechanical Practice Questions - ISRO Scientist Engineer SC - Mechanical Engineering Exam

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The position of a particle moving along a straight line is defined by s(t) = 2*t^3 - 9*t^2 + 12*t meters, where t is in seconds. At what time t is the velocity of the particle zero?

1 s and 2 s 1.5 s only 2 s and 3 s Never

Correct Answer:

1 s and 2 s

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