public void applyImpulse(final Vector3f impulse, final Vector3f relativePosition) {
        rBody.applyImpulse(Converter.convert(impulse, tempVec), Converter.convert(relativePosition, tempVec2));
        rBody.activate();
    }
Apply an impulse to the PhysicsRigidBody in the next physics update.
@param impulse applied impulse
@param relativePosition location relative to object
jme3-jbullet/src/main/java/com/jme3/bullet/objects/PhysicsRigidBody.java