A runner trains on a straight 1km road that lies exactly east–west. She follows this schedule without stopping:
(i) Runs 400m east in 2min.
(ii) Then runs 300m west in 3min.
(iii) Finally runs 500m east in 5min and finishes.
Answer the following.
(a) Calculate the total distance the runner covers during the training session.
(b) Find her resultant displacement from the starting point.
(c) Determine her average speed for the whole session.
(d) Calculate her average velocity for the whole session, stating its direction.