need details explanation

4. Suppose a particle moves along the x-axis so that its position in centimeters at time ( seconds, t 2 0, is given by s(t) = (3 - Be? + 16t a) Find the velocity and acceleration at time t. b) When is the particle stationary, that is, when is its velocity 0? Where is it on the x-axis when the velocity is 0? c) When is the particle moving to the right? When is it moving to the left? d) When is the particle's velocity increasing? When is it decreasing? e) Sketch a graph which illustrates the motion of the particle