ECZ 2018 · GCE Paper 1 — Travel Graphs
The speed-time graph shows a particle which accelerated uniformly from rest to 20 m/s in 10 seconds, travelled at 20 m/s for 20 seconds, then decelerated uniformly to rest at t = 55 seconds. What was the speed at 40 seconds?
- A. 8 m/s
- B. 12 m/s
- C. 16 m/s
- D. 10 m/s
Verified working — step 1
On a straight slow-down line, the speed left is proportional to the time left before stopping.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.
Have a different question?
Search it — if it is from a past paper or a school mock, chances are we have it worked out, or one that uses the same method.
Search any past-paper question