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Chapter 1 · Motion in a straight line·hard·Acceleration
A high-speed train is designed to ensure passenger comfort by limiting the rate of change of acceleration (jerk). If the train's velocity is given by v(t) = (0.5t³ - 6t) m/s for 0 ≤ t ≤ 4s, what is the instantaneous acceleration of the train at t = 2 s?
