The position of a ball rolling in a straight line is given by x = 2.0 - 3.6t + 1.1t
2
, where x is in meters and t in seconds.
(a) Determine the position of the ball at t = 1.0 s, 2.0 s, and 3.0 s.
(b) What is the average velocity over the interval t = 1.0 s to t = 3.0 s?
(c) What is its instantaneous velocity at t = 2.0 s and at t= 3.0 s?