How do i use the apply_impulse method?

I keep trying to use it but an error says that the node does not contain a definition for it.

apply_impulse is a method on Rigidbody2D and RigidBody3D.

If you create a new scene chose one of these for objects you want to apply impulses too or make your script extend from Rigidbody2D/3D

class_name ExampleName extends Rigidbody3D

Example:

class_name Ball extends RigidBody3D
	
func throw(direction: Vector3):
	apply_central_force(direction * 300) # or in your case impulse

class_name is optional

trizZzle Sorry, I always overlook the CSharp tag.
But the rigidbody part should also apply for this.