Answer
a) Greater than.
b) see the graph below.
Work Step by Step
a) Since the distance traveled by the object from point 1 to point 2 is greater than the distance traveled from point 0 to point 1, and since the two distances are done at the same time interval, so the average speed of the object from 1 to 2 is greater than that from 0 to 1.
b) Using tactics box 1.3, we got the average acceleration vector as seen below.
