Answer
(a) Check out the graph
(b)Displacement is defined as shortest distance between two points and shortest distance will always be a straight line. As in both graphs shortest distance is same between initial position and final position of truck.
As the average velocity depends only upon truck total displacement and the total time interval.
As in graph, The total displacement and total time are same for both paths so average velocity is same for both paths.
Work Step by Step
\lt(a) For this check out the graph which is attached.
(b) Yes, the total displacement and time are the same for both paths.
