Choose one object weighing 1 to 5 pounds within range that isn't being worn or carried. The object flies in a straight line up to 90 feet in a direction you choose before falling to the ground, stopping early if it impacts against a solid surface.
Could you use this to fire objects directly upwards or at an angle (like a real catapult)?
If you can fire at an angle, can you use that to extend the range? For instance, traveling 90 feet diagonally then beginning its projectile descent. I'd assume accuracy would be much more difficult than the straight-line 90 feet.
What about using it to launch grappling hooks, etc., with ropes for climbing purposes?