Question

The speed-time graph of an ascending passenger lift is given alongside.
What is the acceleration of the lift :
(i) during the first two seconds ?
(ii) between second and tenth seconds ?
(iii) during the last two seconds ?

Answer 1

(i) 2.3 m/`s^(2)` (ii) Zero (iii) -2.3 m/`s^(2)`