4024/12 May/Jun 2023, Question 16: Speed-Time Graphs and Acceleration
Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
From a speed–time graph, find the total distance travelled by the car over 150 seconds, using the line falling from 20 m/s to 14 m/s then staying at 14 m/s.
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Solution · 2 marks
- 1Distance = area under the graph
- 20 to 100 s: trapezium = 1/2 × (20 + 14) × 100 = 1700 m
- 3100 to 150 s: rectangle = 14 × 50 = 700 m
- 4Total = 1700 + 700 = 2400 m
Answer2400
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