A particle moves along the x axis. Its position as a function of time is given by x(t) = 4.5t² + 7.4t + 5, where t20 and it is in seconds and x is in meters. What is the acceleration in m/s² ? Option 1 Option 2 Option 3 Option 4 Option 5 4.5 4.5t 9.0t 9.0 7.4t

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