An elevator travels up and down. The vertical position of the elevator in
meters over time is shown alongside. Find :
(i) The displacement of the elevator between 8 s and 20 s.
(ii) The distance travelled by the elevator between 8 s and 20 s.
(iii) The displacement of the elevator between 16 s and 24 s.
(iv) The distance travelled by the elevator between 16 s and 24 s.
