Question

Convert 15 kilometers per hour to meters per second.

4.2 meters per second
54 meters per second
25 meters per second
9 meters per second

Answer 1

To convert kilometers per hour (km/h) to meters per second (m/s), you can use the following conversion factor:

1 km/h = 1000 meters / 3600 seconds = 1/3.6 m/s

Now, to convert 15 km/h to m/s:

\[
15 \, \text{km/h} \times \frac{1 \, \text{m/s}}{3.6 \, \text{km/h}} = \frac{15}{3.6} \, \text{m/s} \approx 4.17 \, \text{m/s}
\]

So, 15 kilometers per hour is approximately **4.2 meters per second**.

Therefore, the correct answer is **4.2 meters per second**.