Player controller made for Unity, that functions much like a slingshot. Pull back the anchor, and force will be applied to the player. In this instance, the player is the capsule pictured in the gif below.
Under the player script, adjust the forceToAdd variable to controll how far to shoot the player.
The project doesn't require any setup, although it may not work properly with newer versions of Unity. Tested with version 2019.2.9f1 Personal.