Q
QuestionPhysics

The speed of a particular automobile is 45 mph (miles per hour). Use the following relationships to calculate the speed in units of km/s (kilometers per second). 1 km = 0.62 mi 1 h = 60 min 1 min = 60 s
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Answer

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Step 1
I'll solve this problem step by step, following the specified LaTeX formatting guidelines:

Step 2
: Convert miles per hour to kilometers per hour

- Convert to km/h: $$45 \mathrm{~mph} \times \frac{1 \mathrm{~km}}{0.62 \mathrm{~mi}} = \frac{45}{0.62} \mathrm{~km/h} = 72.58 \mathrm{~km/h}
- Conversion factor: 1 \mathrm{~km} = 0.62 \mathrm{~mi}

Final Answer

0.0201 \mathrm{~km/s}