Make part move in a determined direction (Not coordinates) with a determined power?

Hey there. I don't know much about bodyforces because I haver never seen myself ina situation where I had to use them. Now, I want to make a minigolf script, where you can push the ball with a determined power and direction. I have looked the wiki, but i only saw things about moving to coordinates, and I don't want to do that. I want the ball to be pushed in a determined direction (Straight, etc.) with a determined power (The part should not continue moving forever, it should stop when another force is applied to it, just like gravity). Does someone noe how I should do this? Any bodyforces? Or maybe i should create another part that simply pushes the ball?