Question
WJEC Unit 2 (Calculator) — Higher
A runner covers d = 800 m to the nearest metre, in t = 120 s to the nearest second.
(a) State the bounds for d and t. (2 marks) (b) Find the upper and lower bounds of the average speed. (3 marks) (c) State the speed to a suitable degree of accuracy and justify. (2 marks)
7 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.