ECZ 2018 · GCE Paper 1 — Travel Graphs
The speed-time graph shows a particle which started from rest and accelerated uniformly for 10 seconds to a speed V. It then travelled at constant speed for 20 seconds and then decelerated to rest at time t. Find the speed V the particle reached if its acceleration was 2 m/s2 in the first 10 seconds.
- A. 5 m/s
- B. 20 m/s
- C. 2 m/s
- D. 40 m/s
Verified working — step 1
Accelerating from REST, the speed reached is just acceleration times time - the rise of 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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