A train’s position–time data are:
(0 s, 0 m), (5 s, 40 m), (10 s, 70 m), (15 s, 70 m).
a. (i) Calculate the average velocity in the interval 0 s to 5 s.
b. (ii) Calculate the average velocity in the interval 5 s to 10 s.
c. (iii) Compare the magnitudes found in parts (i) and (ii) and state which interval shows the greater average speed.