What is the SI unit for momentum, according to the source?

1. Momentum is mass multiplied by velocity, so its unit must combine a mass unit with a velocity unit. 2. The SI unit for momentum is kilogram meters per second. 3. Newton seconds squared, joules per meter, and watts per kilogram are units tied to other quantities, such as a differently defined impulse unit, energy, or power, not to momentum itself. 4. Kilogram meters per second matches mass in kilograms times velocity in meters per second exactly. _Source: OpenStax College Physics (CC BY 4.0), Ch 8 "Linear Momentum and Collisions", section 8.1 Linear Momentum and Force_