Momentum can point left, or right, or up. that makes it a

C) vector

Explanation:

A vector magnitude is that which, in addition to a numerical value and its units (module), we must specify its direction and magnitude.

The choice of a scalar or vector to represent a physical magnitude depends on the nature of it; if we are describing the temperature of a room, the density of a body, its mass... we'll need to represent them by a number. On the contrary, when we work with magnitudes such as force, speed, acceleration, momentum, electric field, etc., we will use vectors, because they have direction also

layer a is the exosphere and layer b is the thermosphere.   is the answer i think but i hope this .

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.