For , the velocity of a particle is meters per second. How many distinct times in…

MATHEMATICS · Single correct · A Level · Mathematics · Kinematics · Kinematics

Problem

For −3≤t≤3-3\le t\le3, the velocity of a particle is v(t)=(t−1)2(t+2)v(t)=(t-1)^{2}(t+2) meters per second. How many distinct times in this interval does the particle change direction? (a) 3 (b) 0 (c) 2 (d) 1

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