ECZ 2019 · O-Level Paper 1 — Earth Geometry
The diagram below shows the positions of towns A, B and C on the earth’s surface. (b) A plane flies from A to B at a speed of 400 knots. How long does the journey take if AB = 4 800 nm?
- A. 10 hours
- B. 1 920 000 hours
- C. 8 hours
- D. 12 hours
Verified working — step 1
A knot is a speed of 1 nautical mile per hour, so time = distance ÷ speed.The full step-by-step working and final answer, plus the video lesson for this topic, 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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