Question

How do I know when the Fnet in x direction is 0?

Answer 1

There will be no acceleration in the x direction.

Explanation:

Anytime there is a net force, it will be accompanied by an acceleration. If you look at Newton's second law;

`F=m*a`

You can see that for any massive object, as long as the force, `F` is non-zero, you must have some acceleration as well, and the only time that `F` is zero is when the acceleration, `a` is also zero.