a) Sketch this plot, and add a line whose slope is equal to the average
velocity of the object over the 3 ≤ t ≤ 4 time interval.
b) Sketch this plot, and add a line whose slope is equal to the average
velocity of the object over the 4 ≤ t ≤ 5 time interval.
c) Sketch this plot, and add a line whose slope is equal to the instantaneous
velocity of the object at time t = 3.9.
d) Sketch this plot, and add a line whose slope is equal to the instantaneous
velocity of the object at time t = 4.1.
e) Why can we not sketch a line whose slope is equal to the instantaneous
velocity of the object at time t = 4?