Solved Snowball flying speed (repost)

Sorry for wrong section last post but
Quick question: how can i set the speed (or the gravity) of Snowball just like $force in PlayerShootBowEvent ?

Solved.

PHP:

public function snowball(ProjectileLaunchEvent $event) { //Base of any others
        if($event->getEntity() instanceof Snowball) {
            $motion = $event->getEntity()->getMotion();
            $event->getEntity()->setMotion($motion->divide(1.5)->multiply(6));
        }
    }

@JackboyPlay "1o1 ?" YEAH the winner get a Cookie !