Suppose that the position vector for a particle is given as a function of time by r = x(t)i+y(t)j,
with x(t) = at + b and y(t) = ct2 + d, where a = 1.00m/s, b = 1.00m, c = 0.125m/s2 and
d = 1.00m
(a) Calculate the average velocity during the time interval from t = 2s to t = 4s.
(b) Determine the velocity and the speed at t = 2s.
(c) What is your average velocity
from the beginning of your drive to your arrival at
the station?