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Vector2 flightDirection = arrowBody.getLinearVelocity();
float flightSpeed = flightDirection.nor().len(); //normalizes and returns length
           
Vector2 pointingDirection = arrowBody.getWorldVector( new Vector2( 1, 0 ) );
float dot = flightDirection.dot(pointingDirection);

float dragForceMagnitude = (1 - Math.abs(dot)) * flightSpeed * flightSpeed * dragConstant * arrowBody.getMass();
            
Vector2 force = new Vector2(-flightDirection.x * dragForceMagnitude,-flightDirection.y * dragForceMagnitude);
System.out.println("dot " + dot);
Vector2 arrowTailPosition = arrowBody.getWorldPoint( new Vector2( (float) -1.4, 0 ) );
arrowBody.applyForce( force, arrowTailPosition );