Concept: To solve conversion problems it is very simple, you just have to multiply the speed in km/h by m/s.
We know that 1 km/h is equal to 0.277777778 m/s. So, to express 54 km/h in m/s, we simply need to multiply 54 by 0.277777778.
So;
- 54 km/h = 15 m/s (approximately).
Therefore, the speed of 54 km/h can be expressed as 15 m/s (approximately).