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Paper 1 Higher - Sample Assessment Q21 Answers
21) Here is a speed-time graph for a car journey.
​The journey took 100 seconds.
Picture
The car travelled 1.75km in the 100 seconds.
(a) Work out the value of V.
(3 marks)

​(b) Describe the acceleration of the car for each part of this journey.
(2 marks)

​(Total for Question 21 is 5 marks)

Answers
Question
Answer
Notes
21 a
25
C1 - For interpretation eg. area equated to 1750m
P1 - Process to solve equation
A1
21 b
Discription
C1 - Start to interpret graph eg. describe or give acceleration for one stage of the journey or state that acceleration is constant in all 3 parts 
C1 - Describe acceleration for all stages of the journey or give acceleration for all 3 stages (1.25 m/s^2 ; 0 m/s^2 ; –0.625 m/s^2) 
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