(9a) The velocity-time graph of a particle moving along the x-axis is shown. The particle has zero velocity at t = 0.00 s and reaches a maximum velocity, v_max, after a total elapsed time, t_total. If the initial position of the particle is x₀ = 7.43 m, the maximum velocity of the particle is v_max = 46.4 m/s, and the total elapsed time is t_total = 31.8 s, what is the particle's position at t = 21.2 s? (9b) At t = 21.2 s, what is the particle's velocity? (9c) At t = 21.2 s, what is the particle's acceleration?