ECZ 2016 · GCE Paper 1 — Travel Graphs
In the same journey (constant 30 m/s until 80 s, then uniform deceleration to rest at 100 s), find the speed of the car at the ninety fifth second.
- A. 22.5 m/s
- B. 7.5 m/s
- C. 15 m/s
- D. 12 m/s
Verified working — step 1
On a straight slide to rest, the speed left is proportional to the time left - so count from the END, not from 80 s.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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