Suppose that the position vector for a particle is given as a function of time by (t) = x(t) + y(t), with x(t) = at + b and y(t) = ct2 + d, where a 2.00 m/s, b = 1.50 m, c = 0.119 m/s, and d = 1.08 m. (a) Calculate the average velocity during the time interval from t = 2.20 s tot 3.95 s. 2i+0.731j m/s (b) Determine the velocity at t = 2.20 s. 7= m/s x Determine the speed at t = 2.20 s. Your response differs from the correct answer by more than 10%. Double check your calculations. m/s