Momentum SI Units Determination

Momentum ($p$) is a fundamental concept in physics, defined as the product of an object's mass ($m$) and its velocity ($v$). The formula is expressed as:

$ p = m \times v $

Calculating SI Units

To find the SI unit of momentum, we multiply the SI unit of mass by the SI unit of velocity:

• The SI unit of mass ($m$) is the kilogram ($kg$).
• The SI unit of velocity ($v$) is meters per second ($m \, s^{-1}$).

Therefore, the SI unit for momentum ($p$) is:

$ SI \, unit(p) = SI \, unit(m) \times SI \, unit(v) $

$ SI \, unit(p) = kg \times m \, s^{-1} $

$ SI \, unit(p) = kg \, m \, s^{-1} $

Conclusion

Comparing this result with the given options, the correct SI unit for momentum is $kg \, m \, s^{-1}$, which corresponds to Option A.