1.

The position of a particle moving along the x-axis is given by x = 12 t2 – 2t3, where x is in metres and t is in seconds. The acceleration of the particle at t = 3.0 s is

A. -12 m/s2
B. +9 m/s2
C. +12 m/s2
D. -9 m/s2
Answer» B. +9 m/s2


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