A student starts from the main gate of her school, walks 120m due east, then 150m due west, all in a total time of 5min.
(a) Calculate the total distance covered by the student.
(b) Determine the magnitude and direction of the student’s displacement from the main gate at the end of the walk.
(c) Find the average speed of the student for the whole walk.
(d) Find the average velocity of the student for the whole walk.
(e) Comment briefly on the numerical relation between the values obtained in parts (c) and (d).