O-LevelMathematicsAlgebra and graphs4024/13 · May/June 2025 · Q185 Marks
The diagram shows the speed-time graph for part of a car's journey. [Figure 18.1]
- (a)The car travels a total distance of 1.01 km in the 90 seconds. Calculate the value of V.[4]
- (b)Calculate the deceleration of the car in the last 20 seconds.[1]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (May/June 2025). The mark or mark type is shown in brackets.
- [4] (a) 10
- M2 for correct expression for total area 1/2 ×30×(24-V)+70V+1/2 ×(90-70)V oe
- or M1 for correct method to find a relevant area under the graph
- M1 for their area = 1010
- [1] (b) their(a)/20 m/s²
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