(necro because it's better than making a new thread)

So does anyone know if there's a formula I can use to determine an initial velocity from an initial force & mass? Like, if you wanted to use the displacement formula: s = ut + at^2/2, would there be a way to get u if all you had was the force you placed on the object & the object's mass? I've looked through my notes & I can't seem to find if there's a formula that relates the three variables directly. I know there's F = ma, but is there a variation on that where you have velocity instead of acceleration? This isn't anything urgent, but I'm working on a simulation & I'm wondering if that formula existed. Thanks in advance.

Edit: Nevermind, I figured it out