Mass does not have direction.
my understanding In the case of bullet momentum (mass in motion) it does.
Motion can be decscribed in terms of displacement, distance, velocity, acceleration, time and speed
Go back to school. Mass is independent of direction just as it is independent of gravity.
Speed is a scalar quantity with no direction.
Velocity is a vector quantity which has both magnitude and direction.
Any object with mass that also has velocity has momentum. It has direction because it has velocity, not because it has mass.
Mass has no direction.
