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Position and Time The position of an object moving in a straight line is given by...

Position and Time The position of an object moving in a straight line is given by x = 5t - 8 t 2 + 6t 3, where x is in meters and t in seconds.

(a) What is the position of the object at t = 1s?
m
What is the position of the object at t = 2?
  m
What is the position of the object at t = 3?
m
What is the position of the object at t = 4 s?
m
(b) What is the object's displacement between t = 0 and t = 4 s?
m
(c) What is the average velocity for the time interval from t = 2 s to t = 4 s?
  m/s
(d) Graph x versus t for 0 <= t <= 4 s and indicate how the answer for (c) can be found on the graph. (Do this on paper. Your instructor may ask you to turn in this graph.)

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