The path r(t)=(t) + (212 +9) j describes motion on the parabola y = 2x + 9. Find the particle's velocity and acceleration vectors at t = 1, and sketch them as vectors on the curve. The velocity vector at t = 1 is v(1) = (i + (j. (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)