Problem-Solving and Data AnalysisVery hardConverting metres per second to kilometres per hour
Problem-Solving and Data Analysis practice question
A cyclist rides at 2 metres per second. What is the cyclist's speed in kilometres per hour?
Answer: 7.2 or 36/5
2 m/s × 3600 s/h = 7,200 m/h = 7.2 km/h.
Common wrong answers
- If you answered 120
- 120 converts seconds to minutes (× 60) but not minutes to hours or metres to kilometres.
- If you answered 7200
- 7,200 is metres per hour; divide by 1,000 for kilometres.
- If you answered 0.56
- 0.56 converts the wrong way (2 ÷ 3.6), as if from km/h to m/s.
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