ECZ 2016 · O-Level Paper 1 — Travel Graphs
The diagram below is the speed-time graph of a particle, which accelerates uniformly from a speed of v m/s to a speed of 5v m/s in 20 seconds. The distance travelled by the object from 0 seconds to 20 seconds is 80m. Find the value of v.
- A. 4⁄3 m/s
- B. 4 m/s
- C. 8⁄3 m/s
- D. 2⁄3 m/s
Verified working — step 1
Distance is the area under the graph - a TRAPEZIUM here, since the speed starts at v, not 0.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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