Linear momentum is expressed as p = m*v, where m is mass and v is velocity, in units kg.m.s-1. Stack exhaust momentum is expressed as p = ro*v^2, where ro is the density of exhaust gas and v is its velocity, in units kg.m-1.s-2. What is the difference between these two momenta? Why do they have different units?
Domenico Olivari
ro*V^2 in a "momentum flux" , that is momentum per unit surface of exit per second.
Doing this the units are the same.ro*V is then the "mass flow".
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