Which of newton’s laws involves mass and acceleration? question 1 options: 3rd 1st 2nd all of them

Newton's second law states the following:

The change of movement is directly proportional to the force applied to the body and occurs in the direction where the force is applied.

In other words, we have:

F = ma

Where,

F: net force acting on the body

m: body mass (proportionality constant)

a: body acceleration

Newton’s Law that involves mass and acceleration is:

2nd Law

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

i don't understand. explain it clearly