Number 8
1 mark · EasyWhat is the average speed in m/s of someone running 100 metres in 20 seconds?
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5 m/s (±0)
Common mistakes: 20 ÷ 100; 0.2
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Marking points
A1 · 1 mark · Correctly finds speed: 100 ÷ 20 = 5 m/s.
Worked solution