Convert 72 km/h into metres per second.
Answer and explanation
Correct answer: B. 20 m/s
- Step 1: Divide km/h by 3.6. Step 2. 72 ÷ 3.6 = 20 m/s. Answer: 20 m/s. Why not the others: 259.2 m/s results from having multiplied by 3.6 instead of dividing. 12 m/s results from having divided by 6. 0.072 m/s results from having only divided by 1000.
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