11.63 A particle moves in a straight line with the velocity shown in the = figure. Knowing that x -540 m at t = 0, (a) construct the a-t and x-t curves for 0<t< 50 s, and determine (b) the total distance traveled by the particle when t = 50 s, (c) the two times at which x = v (m/s) | = 0. 60 -5 10 -20 Fig. P11.63 and P11.64 26 41 46 +7 t(s)