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17 (c) Ravi sets off on another journey. His friend Lewis follows Ravi’s car as shown in the diagram.

(i)

velocity = 10 m/s

velocity = 15 m/s

Lewis

Ravi

What is the relative velocity of the two cars? Choose from 0.7

1.5

5

12.5

25

answer ................................................. m/s [1] (ii)

Explain your answer to (i). ........................................................................................................................................... ........................................................................................................................................... ........................................................................................................................................... ...................................................................................................................................... [2] [Total: 7]

Š OCR 2013

Turn over


P3 question 8 (2)  
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