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Question
Over a short interval, starting at time t = 0, the coordinate of an automobile in meters is given by x(t) = 27t - 4.0t3, where t is in seconds. The magnitudes of the initial (at t = 0) velocity and acceleration of the auto respectively are:
A) 0 m/s; 12 m/s2
B) 0 m/s; 24 m/s2
C) 27 m/s; 0 m/s2
D) 27 m/s; 12 m/s2
E) 27 m/s; 24 m/s2
Answer
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