ECZ 2025 · GCE Paper 1 — Travel Graphs
The diagram shows the speed-time graph of an object. The object starts from rest and accelerates uniformly to a speed of 20 m/sin 4 seconds. It then moves at this constant speed until the 10th second, and finally decelerates uniformly to rest after a further 5 seconds. Find the acceleration during the first 4 seconds.
- A. 4 m/s²
- B. 5 m/s²
- C. 2 m/s²
- D. 1.33 m/s²
Verified working — step 1
Acceleration is the gradient of the first section: (20 − 0) ÷ 4 = …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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