The position of the particle is given by s (3 t2-9 t+8 )m, where t is in seconds. (figure 1) determine the time when the velocity of the particle is zero. express your answer with the appropriate units. μα ? value units t request answer submit part b determine the total distance traveled by the particle when t = 4 s. figure 1 of 1 express your answer with the appropriate units. ? μα value (as)tot units