ECZ 2022 · O-Level Paper 1 — Travel Graphs
The diagram below is the speed-time graph of an object. The object starts from rest and accelerates uniformly for 2 seconds until it reaches a speed of 10m/s. It then travels at this speed for 8 seconds and finally decelerates to rest after 5 seconds. Find the (a) retardation of the object in the last 5 seconds.
- A. 10m/s2
- B. 12 m/s2
- C. 2m/s2
- D. 5m/s2
Verified working — step 1
Retardation is deceleration - the speed LOST each second. Read it from the LAST section of the graph only.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