ECZ 2021 · GCE Paper 1 — Travel Graphs
From the speed-time graph, the car travels at 18m/suntil the 13th second and then decelerates at 3m/s² until it comes to rest after t seconds. Find the value of t.
- A. 6 s
- B. 16 s
- C. 19 s
- D. 22 s
Verified working — step 1
The final stage loses 18 m/sat 3 m/s², which takes 18 ÷ 3 = 6 seconds. That stage begins at 13 seconds, so t = 13 + 6 = …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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