Convert 3.8 m/s to km/h

I got 13.68 but I got it wrong, can someone help me know why?

To convert from meters per second (m/s) to kilometers per hour (km/h), you need to multiply the given value by 3.6.

Here's the correct calculation:

3.8 m/s * 3.6 km/h = 13.68 km/h

So your calculation of 13.68 km/h is correct. It seems like there might have been a mistake in the source that marked your answer as incorrect.