O-LevelMathematicsAlgebra and graphs4024/12 · Oct/Nov 2021 · Q145 Marks
The diagram shows the speed-time graph for the start of a cyclist's journey. [Figure X.X]
- (a)Find the acceleration during the first 20 seconds.[1]
- (b)Describe the motion of the cyclist between t = 20 and t = 30.[1]
- (c)Find the total distance travelled in the 50 seconds.[3]
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 (Oct/Nov 2021). The mark or mark type is shown in brackets.
- [1] ¹⁵⁄₂₀ oe
- [1] Speed is constant oe
- [3] 500 nfww
- B2 for answer 400
- OR M2 for complete method to find total area under the graph e.g. ½(10+30)×15 + ½(5+15)×20 oe or M1 for correct method to find a relevant area under the graph soi
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