ECZ 2025 · GCE Paper 1 — Travel Graphs
The diagram below shows the speed graph of a particle. The particle starts from rest and accelerates uniformly to a speed of 10 m/s in 5 seconds. It then moved at this constant speed for 5 seconds and then accelerates at 2 m/s2 for 5 seconds to reach a speed of v m/s. Find the acceleration during the first 5 seconds.
- A. 4 m/s2
- B. 5 m/s2
- C. 2 m/s2
- D. 1.33 m/s2
Verified working — step 1
On a speed-time graph, acceleration is the gradient - and the question asks only about the FIRST sloped section.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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