2. The graph in Figure below shows a particle's velocity moving along a coordinate line. At t = 0, the position is x = 0. v(t), 5 0 m sec -5 10 20 30 40 50 60 t,sec (a) Sketch the acceleration a vs. time t graph corresponding to this velocity vs. time graph. (b) Positions at t = 30 s and at t = 60 s. (c) Total traveled distance at t = 60 s. (d) Average speed of the particle between t = 0 and t = 60 s.