why did the rigid body suddenly stop when I try moving it on tiles?

Archive
1
:information_source: Attention Topic was automatically imported from the old Question2Answer platform.
:bust_in_silhouette: Asked By NoctilucaScintillans

I was trying moving a rigid body on tiles by adding force on it. but it only moved for a while, then it stopped. however, if i put the rigid body on something else that is not tiles(e.g. a static body), it will move normally. why is it so?

func _physics_process(_delta):
  if Input.is_action_just_pressed("ui_right"):
	add_central_force(Vector2(100, 0))

enter image description here