Convert a speed of 55 m/s to km/h.

Introduction / Context:
Use the standard conversion 1 m/s = 3.6 km/h, multiplying metres-per-second by 3.6 to obtain km/h.

Given Data / Assumptions:

• Speed = 55 m/s.

Concept / Approach:
Multiply 55 by 3.6.

Step-by-Step Solution:

Verification / Alternative check:
Compute as 55 * (18/5) = 55 * 3.6 = 198.

Why Other Options Are Wrong:
They ignore the correct conversion factor; 275 km/h would imply 5.0 factor, which is incorrect.

Common Pitfalls:
Using approximate or incorrect multipliers when converting units.

Final Answer:
198 km/h