Problem. 2 : The position 3(t) of a robot moving along a track at time t is given by s(t) = 9t2 9015 + 4. What is the velocity 00:) of the particle at time t? v(t) = 18t-90 Problem. 2.1 : Find the total distance travelled by the robot between t = 0 and t = 9. 369 I. Problem. 2.1.1 : What is the acceleration a(t) of the particle at time t? a(t) = n