A particle moving along the x axis has a position given by x = (24t- 2.0t3) m, where t is measured in s. What is the magnitude of the acceleration of the particle at the instant when its velocity is zero?
A. 24 m/s2
B. zero
C. 12 m/s2
D. 48 m/s2
E. 36 m/s2
Answer: A
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