QUESTION 6 An object is moving along a straight-line path. The table below gives the position of the object in feet, measured from some reference point as a function of time in seconds. 0 2 4 6 8 10 s (t) 0 0.5 1.8 3.8 6.5 9.6 Which of the following is the best estimate of the instantaneous velocity of the object at t = 4 seconds? O 0.675 ft/sec O 0.825 ft/sec O 1.175 ft/sec O 1.65 ft/sec