Section 1: Multiple Choice
Question 3 of 30
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Question 3

A particle moves along the x-axis with velocity given by

v(t) = 3t² - 12t + 9   for t ≥ 0

At what time t does the particle change direction from moving in the negative direction to moving in the positive direction?

A t = 1
B t = 2
C t = 3
D t = 4
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