ECZ 2015 · O-Level Paper 1 — Travel Graphs
From the speed–time graphs shown, what is Sulanji's acceleration between the 25th and 30th seconds?
- A. −6 m/s²
- B. 6 m/s²
- C. −1.2 m/s²
- D. −7.5 m/s²
Verified working — step 1
Between t = 25 and t = 30, Sulanji's speed falls from 30 m/sto 0: a = 0 − 3030 − 25= …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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