Which one is longer mts (metre-tonne-second) or km (kilometre)?

To determine which one is longer between mts (metre-tonne-second) and km (kilometre), we need to understand the units involved and their respective conversions.

First, let's look at each unit individually:

1. Metre-tonne-second (mts): This unit is derived from the metric system and consists of three components.
- Metre (m): The metre is a unit of length in the metric system. It is the base unit for measuring distance.
- Tonne (t): The tonne is a unit of mass in the metric system equal to 1,000 kilograms (kg).
- Second (s): The second is a unit of time in the International System of Units (SI).

2. Kilometre (km): The kilometre is also a unit of length in the metric system. It is equal to 1,000 metres.

To determine which unit is longer, we can compare their lengths in terms of metres, as that is the common base unit for both.

- 1 mts (metre-tonne-second) is equivalent to 1 metre (m).
- 1 km (kilometre) is equivalent to 1,000 metres (m).

From this comparison, we can conclude that 1 km (kilometre) is longer than 1 mts (metre-tonne-second).