Answers

2016-04-13T11:33:21+05:30
Let us assume that pressure = linear momentum/volume
Pressure = mass* velocity   / volume (where momentum=mass*velocity)
Unit of Pressure = Kgm s^{-1}  m^{-3}
or
Kg s^{-1}  m^{-2} -----------------(1)

By the definition of pressure:
Pressure = Force/Area
Unit of pressure = Kgm s^{-2}  m^{-2}
or
Kg m^{-1} s^{-2}  ----------------(2)

Since 1 is not equal to 2
Pressure is not a linear momentum per unit volume.

0
2016-04-13T14:28:19+05:30
Dimensional formula of pressure = [ M¹ L⁻¹ T⁻² ]................(1)
Dimensional formula of momentum = [ M¹ L¹ T⁻¹ ]
Dimensional formula of volume = [ M° L³ T° ]

momentum / volume = [ M¹ L⁻² T⁻¹ ] .........................(2)
(1) ≠ (2)
Pressure can not be defined as the linear momentum per unit volume.
1 5 1