The position of a particle (in cm) moving on a line after i seconds is given by the equation, s (t ) = 2t - 158 + 361, 0 5 1 56 15 marks] a. Determine when the particle is at rest. b. Determine when the particle is moving in a positive direction. C. Determine the total distance traveled by the particle during the first 6 seconds. d. State the time at which the minimum velocity occurs