How do I force part position if another part (player) is in the way?

Whenever I move a part (change position) via Vector3, it always move up (not in the position I told it to) if another part is in the way. How can I "force" the part into that position, rather a part is in the way or not. (most times, the player is the part in the way). I will gladly explain more on my issue if I have too.