You are being over simple on this one.

v = u + at

Where required final velocity v = 0
a = acceleration due to moon's gravity (function rather than a constant)

If the moons gravity is accelerating you to the left there is a velocity u to the right at which the two will cancel out.  Such a landing is possible on a perfectly smooth ball, pity there are mountains on the moon - one of which is bound to get in the way.