ECZ 2019 · O-Level Paper 1 — Travel Graphs
The diagram below is the speed time graph of a car. The car starts from rest and accelerates uniformly at 2 m/s2 for t seconds until it reaches a speed of 16 m/s. It then travels at 16 m/sfor 40 seconds, after which it comes to rest in a further 10 seconds. Find the (b) distance travelled in the last 50 seconds.
- A. 80m
- B. 800m
- C. 640m
- D. 720m
Verified working — step 1
The last 50 seconds consist of 40 seconds at 16m/sand 10 seconds slowing to rest.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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